Se connecter

Bibliographies thématiques / Pro-p groups

Sommaire

Articles de revues
Thèses
Livres
Chapitres de livres
Actes de conférences
Rapports d'organisations

Littérature scientifique sur le sujet « Pro-p groups »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 10 mars 2023

Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres

Choisissez une source :

Consultez les listes thématiques d’articles de revues, de livres, de thèses, de rapports de conférences et d’autres sources académiques sur le sujet « Pro-p groups ».

À côté de chaque source dans la liste de références il y a un bouton « Ajouter à la bibliographie ». Cliquez sur ce bouton, et nous générerons automatiquement la référence bibliographique pour la source choisie selon votre style de citation préféré : APA, MLA, Harvard, Vancouver, Chicago, etc.

Vous pouvez aussi télécharger le texte intégral de la publication scolaire au format pdf et consulter son résumé en ligne lorsque ces informations sont inclues dans les métadonnées.

Articles de revues sur le sujet "Pro-p groups"

1

Quadrelli, Claudio. « $1$-smooth pro-$p$ groups and Bloch–Kato pro-$p$ groups ». Homology, Homotopy and Applications 24, n^o 2 (2022) : 53–67. http://dx.doi.org/10.4310/hha.2022.v24.n2.a3.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

2

Mel'nikov, O. V. « Aspherical pro-$ p$-groups ». Sbornik : Mathematics 193, n^o 11 (31 décembre 2002) : 1639–70. http://dx.doi.org/10.1070/sm2002v193n11abeh000692.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

3

Salehi Golsefidy, Alireza. « Character degrees of p-groups and pro-p groups ». Journal of Algebra 286, n^o 2 (avril 2005) : 476–91. http://dx.doi.org/10.1016/j.jalgebra.2004.12.013.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

4

Herfort, Wolfgang, et Pavel Zalesskii. « Virtually free pro-p groups ». Publications mathématiques de l'IHÉS 118, n^o 1 (16 février 2013) : 193–211. http://dx.doi.org/10.1007/s10240-013-0051-4.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

5

Mattarei, Sandro. « Some Thin Pro-p-Groups ». Journal of Algebra 220, n^o 1 (octobre 1999) : 56–72. http://dx.doi.org/10.1006/jabr.1998.7809.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

6

Afanas’eva, S. G., et N. S. Romanovskii. « Rigid Metabelian Pro-p-Groups ». Algebra and Logic 53, n^o 2 (mai 2014) : 102–13. http://dx.doi.org/10.1007/s10469-014-9274-9.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

7

Gavioli, Norberto, Valerio Monti et Carlo Maria Scoppola. « Pro-p groups with waists ». Journal of Algebra 351, n^o 1 (février 2012) : 130–37. http://dx.doi.org/10.1016/j.jalgebra.2011.11.022.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

8

Morishita, Masanori, et Yuji Terashima. « p -Johnson homomorphisms and pro- p groups ». Journal of Algebra 479 (juin 2017) : 102–36. http://dx.doi.org/10.1016/j.jalgebra.2017.01.028.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

9

Herfort, Wolfgang, Pavel Zalesskii et Theo Zapata. « Splitting theorems for pro-p groups acting on pro-p trees ». Selecta Mathematica 22, n^o 3 (8 janvier 2016) : 1245–68. http://dx.doi.org/10.1007/s00029-015-0217-7.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

10

Andozhskiĭ, I. V., et V. M. Tsvetkov. « ANALYTIC PRO-p-GROUPS OF RANK 3 AND CLOSED PRO-p-GROUPS OF TYPE (3,4) ». Mathematics of the USSR-Izvestiya 27, n^o 3 (30 juin 1986) : 593–99. http://dx.doi.org/10.1070/im1986v027n03abeh001202.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Plus de sources

Thèses sur le sujet "Pro-p groups"

1

Iniguez-Goizueta, Ainhoa. « Word fibres in finite p-groups and pro-p groups ». Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:3a9cfc11-d171-4876-82b3-7dff012c3a70.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

2

Snopçe, Ilir. « Lie methods in pro-p groups ». Diss., Online access via UMI:, 2009.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

3

Martin, Maria Eugenia. « Propriedades homologicas de grupos pro-p ». [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306927.

Texte intégral

Résumé :

Orientador: Dessislava Hristova Kochloukova
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica
Made available in DSpace on 2018-08-13T12:02:14Z (GMT). No. of bitstreams: 1 Martin_MariaEugenia_M.pdf: 974097 bytes, checksum: 862be4d1ac3b05cc1a28ba59cf6c0460 (MD5) Previous issue date: 2009
Resumo: Nesta dissertação discutimos propriedades homológicas de grupos discretos e grupos pro-p. Em particular trabalhamos com grupos abstratos de dualidade de Poincaré orientáveis de dimensão três e seu completamento pro-p. Os primeiros capítulos da dissertação incluem uma exposição sobre as propriedades homológicas básicas de grupos abstratos e grupos pro-p. Finalmente, descrevemos um resultado recente de [KZ], publicado em Transactions MAS ( 2008), que clássica quando o completamento pro-p de um grupo de dualidade de Poincaré orientável de dimensão três de um grupo pro-p de dualidade de Poincaré orientável de dimensão três
Abstract: In this dissertation we discuss homological properties of discrete groups and pro-p groups. In particular we work with groups of abstract of Poincaré duality of dimension three steerable and its pro-p completion. The first chapters of the dissertation include a presentation on the basic homological properties of abstract groups and pro-p groups. Finally, we describe a recent result of [KZ], published in Transactions AMS (2008), which ranks as the pro-p completion of a group of Poincare-steerable dual dimension of three is a group of pro-p duality of Poincare -steerable in three dimensions
Mestrado
Mestre em Matemática

Styles APA, Harvard, Vancouver, ISO, etc.

4

Pinto, Aline Gomes da Silva. « Propriedades homologicas de grupos pro-p ». [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306931.

Texte intégral

Résumé :

Orientador: Dessislava H. Kochloukova
Tese (doutorado) - Universidade Estadual de Campinas. Instituto de Matematica, Estatistica e Computação Cientifica
Made available in DSpace on 2018-08-04T14:37:32Z (GMT). No. of bitstreams: 1 Pinto_AlineGomesdaSilva_D.pdf: 2789516 bytes, checksum: 20f42bafb2b08678ceb88f751e8b275e (MD5) Previous issue date: 2005
Resumo: Neste trabalho, provamos dois resultados sobre propriedades homológicas de grupos pro-p. O primeiro responde positivamente à conjectura de J. King que afirma que, se G é um grupo pro-p metabeliano finitamente gerado e m um inteiro positivo, então G mergulha como subgrupo fechado em um grupo pro-p metabeliano de tipo homológico F Pm. O segundo resultado caracteriza módulos pro-p B de tipo homológico F P m sobre [[ZpG]], onde G é um grupo pro-p metabeliano topologicamente finitamente gerado, dado pela extensão de um grupo pro-p abeliano A por um grupo pro-p abeliano Q, e B é um [[ZpQ]]-módulo pro-p finitamente gerado que é visto como um [[ZpG]]-módulo pro-p via a projeção de G -t Q. A caracterização é dada em termos do invariante para grupos pro-p metabelianos introduzido por J. King [15] e é uma generalização do caso onde B = Zp é o anel de inteiros p-ádicos considerado como G-módulo trivial, que dá a classificação dos grupos pro-p metabelianos de tipo homológico FPm, provado por D. Kochloukova [18]
Abstract: In this work, we prove two results about homological properties of metabelian pro-p groups. The first one answers positively a conjecture suggested by J. King that, if G is a finitely generated metabelian pro-p group and m a positive integer, G embeds in a metabelian pro-p group of homological type F P m. The second result caracterize the modules B of homological type F P mover [[ZpG]], where G is a topologically finitely generated metabelian pro-p group that is an extension of A by Q, with A and Q abelian, and B is a finitely generated pro-p [[ZpQ]]-module that is viewed as a pro-p [[ZpG]]-module via the projection G -f Q. The characterization is given in terms of the invariant introduced by J. King [15] and is a generalization of the case when B = Zp is considered as a trivial [[ZpG]]-module, that gives the classification of metabelian pro-p groups of type FPm, proved by D. Kochloukova [18]
Doutorado
Matematica
Doutor em Matemática

Styles APA, Harvard, Vancouver, ISO, etc.

5

Rêgo, Yuri Santos 1989. « A desigualdade de Golod-Safarevic para grupos pro-p e grupos abstratos ». [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306920.

Texte intégral

Résumé :

Orientador: Dessislava Hristova Kochloukova
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matemática Estatística e Computação Científica
Made available in DSpace on 2018-08-25T09:13:05Z (GMT). No. of bitstreams: 1 Rego_YuriSantos_M.pdf: 1142010 bytes, checksum: 548d8ef6ff2800026c8cd65783b81a9f (MD5) Previous issue date: 2014
Resumo: Neste trabalho estuda-se os principais resultados dados por J. Wilson no artigo "Finite Presentations of Pro-p Groups and Discrete Groups", relacionados à Desigualdade de Golod-¿afarevi? para uma ampla classe de grupos pro-p e abstratos infinitos. Apresentamos a teoria básica de grupos livres abstratos, levando à noção de apresentação de grupos, com foco em apresentações finitas. É feito um estudo sobre grupos profinitos, particularmente no caso pro-p. Abrange-se definições, propriedades algébricas e topológicas básicas, bem como o caso de finitos geradores com o subgrupo de Frattini, e conceitos de completamentos, de grupos pro-p livres, de apresentações de grupos pro-p e de álgebras de grupo completas. No capítulo final estudamos os resultados principais para grupos pro-p e abstratos finitamente apresentáveis, que incluem grupos solúveis e implicações na estrutura de certos grupos satisfazendo a Desigualdade. Os anexos relacionam a teoria aqui apresentada a grupos pro-p de posto finito e homologia e cohomologia de grupos pro-p
Abstract: In this work we study the main results presented by J. Wilson in his paper "Finite Presentations of Pro-p Groups and Discrete Groups", which extend the Golod-¿afarevi? Inequality to a large class of infinite pro-p and abstract groups. In the first chapter we present the basic theory of abstract free groups, focusing on finite presentations. Next we study profinite groups, with focus on pro-p groups. This study ranges from definitions to basic algebraic and topological properties, as well as the cases of finitely generated groups and the Frattini subgroup, and notions of completion, free pro-p groups, presentations of pro-p groups and completed group algebras. In the last chapter we study the main results regarding finite presentations of pro-p and abstract groups, which include soluble groups and implications on the structure of certain groups for which the Inequality holds. In the appendixes we briefly relate the presented theory to pro-p groups of finite rank and homology and cohomology of pro-p groups
Mestrado
Matematica
Mestre em Matemática

Styles APA, Harvard, Vancouver, ISO, etc.

6

King, Jeremy David. « Finite presentability of Lie algebras and pro-p groups ». Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364385.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

7

Lima, Igor dos Santos 1983. « Completamentos Pro-p de grupos de dualidade de Poincaré ». [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306926.

Texte intégral

Résumé :

Orientador: Dessislava Hristova Kochloukova
Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Matemática, Estatística e Computação Científica
Made available in DSpace on 2018-08-20T17:04:33Z (GMT). No. of bitstreams: 1 Lima_IgordosSantos_D.pdf: 1446540 bytes, checksum: 1e68bfb627d234fa97739cd2e813b4a9 (MD5) Previous issue date: 2012
Resumo: Neste trabalho, nos Teoremas Principais, damos condições suficientes para que o completamento pro-p de um grupo abstrato PDn seja virtualmente um grupo pro-p PDs para algum s ? n - 2 com n ? 4. Esse resultado é uma generalização do Teorema 3 em [K-2009]. Nossa prova é baseada em [K-2009] e nos resultados de A. A. Korenev [Ko-2004] e [Ko-2005]. Além disso, damos alguns exemplos de grupos que satisfazem as condições dos Teoremas Principais
Abstract: In this work we give in the Main Theorems suffiient conditions for that the pro- p completion of an abstract orientable PDn group to be virtually a pro-p PDs group for some s ? n - 2 with n ? 4. This result is a generalization of the Theorem 3 in [K-2009]. Our proof is based on [K-2009] and on the results of A. A. Korenev [Ko-2004] and [Ko-2005]. Furthermore we give some examples of groups that satisfy the conditions of the Main Theorems
Doutorado
Matematica
Doutor em Matemática

Styles APA, Harvard, Vancouver, ISO, etc.

8

Middleton, Sarah E. A. P. « Hereditarily just infinite profinite groups that are not virtually pro-p ». Thesis, Royal Holloway, University of London, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.604025.

Texte intégral

Résumé :

A profinite group G is just infinite if it is infinite and every non- trivial closed normal subgroup of G is open, and hereditarily just infinite if every open subgroup is just infinite. Hereditarily just infinite profinite groups that are not virtually pro-p were first described by J. S. Wilson, in his recent paper 'Large hereditarily just infinite groups', in 2010. These profinite groups are inverse limits of finite groups that arc iterated wreath products. The iterated wreath products are constructed from finite non-abelian simple groups, using two types of transitive actions; one of which is specified and the other is left unspecified.

Styles APA, Harvard, Vancouver, ISO, etc.

9

Smith, Duncan Alexander Mathematics UNSW. « The Families with Period 1 of 2-groups of Coclass 3 ». Awarded by:University of New South Wales. Mathematics, 2000. http://handle.unsw.edu.au/1959.4/17792.

Texte intégral

Résumé :

The 2-groups of coclass 1 are widely known and James (in 1975) looked at the 2-groups of coclass 2. Development of the p-group generation algorithm implemented by O'Brien at ANU enabled group presentations to be provided for the 2-groups of coclass 3 by Newman and O'Brien for groups of order up to 223. Newman and O'Brien (in 1999) conjectured the number of descendants of 2n for all n. They introduced the concept of a family, with each family related to a different pro-p-group and the concept of a sporadic p-group, a p-group external to any family. They found 1782 sporadic 2-groups with order at most 214. The 70 families of 2-groups of coclass 3 can be further split according to their period, a measure of the repetitive structure of the families. Newman and O'Brien conjectured that these families had periods of 1, 2 or 4. This thesis examines the 2-groups of coclass 3 contained in families with period 1 and shows that the number of descendants conjectured by Newman and O'Brien is correct. Furthermore the presentation of all groups contained in period 1 families is provided and shown to be correct.

Styles APA, Harvard, Vancouver, ISO, etc.

10

Gärtner, Jochen [Verfasser], et Kay [Akademischer Betreuer] Wingberg. « Mild pro-p-groups with trivial cup-product / Jochen Gärtner ; Betreuer : Kay Wingberg ». Heidelberg : Universitätsbibliothek Heidelberg, 2011. http://d-nb.info/1179782801/34.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Plus de sources

Livres sur le sujet "Pro-p groups"

1

D, Dixon John, Du Sautoy Marcus et Segal Daniel Ph D, dir. Analytic pro-p groups. 2^e éd. Cambridge [England] : Cambridge University Press, 1999.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

2

Marcus, Du Sautoy, Segal Daniel Ph D et Shalev Aner 1958-, dir. New horizons in pro-p groups. Boston : Birkhäuser, 2000.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

3

Klaas, G. Linear pro-p-groups of finite width. Berlin : Springer, 1997.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

4

du Sautoy, Marcus, Dan Segal et Aner Shalev, dir. New Horizons in pro-p Groups. Boston, MA : Birkhäuser Boston, 2000. http://dx.doi.org/10.1007/978-1-4612-1380-2.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

5

Klaas, Gundel, Charles R. Leedham-Green et Wilhelm Plesken. Linear Pro-p-Groups of Finite Width. Berlin, Heidelberg : Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/bfb0094086.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

6

Analytic pro-p groups. Cambridge : New York, NY, 1991.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

7

Dixon, J. D., Marcus Du Sautoy, D. Segal et A. Mann. Analytic Pro-P Groups. Cambridge University Press, 2009.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

8

M. P. F. Du Sautoy, J. D. Dixon, D. Segal et A. Mann. Analytic Pro-P Groups. Cambridge University Press, 2011.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

9

Shalev, Aner, Marcus Du Sautoy et Dan Segal. New Horizons in Pro-P Groups. Birkhauser Verlag, 2012.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

10

Sautoy, Marcus Du. New Horizons in Pro-P Groups. Birkhäuser Boston, 2012.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Plus de sources

Chapitres de livres sur le sujet "Pro-p groups"

1

Lubotzky, Alexander, et Dan Segal. « Pro-p Groups ». Dans Subgroup Growth, 357–65. Basel : Birkhäuser Basel, 2003. http://dx.doi.org/10.1007/978-3-0348-8965-0_22.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

2

Lubotzky, Alexander, et Dan Segal. « Pro-p Groups ». Dans Subgroup Growth, 73–90. Basel : Birkhäuser Basel, 2003. http://dx.doi.org/10.1007/978-3-0348-8965-0_5.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

3

Schneider, Peter. « p-Valued Pro-p-Groups ». Dans Grundlehren der mathematischen Wissenschaften, 169–94. Berlin, Heidelberg : Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21147-8_5.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

4

Koch, Helmut. « Free pro-p Groups ». Dans Springer Monographs in Mathematics, 41–48. Berlin, Heidelberg : Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04967-9_5.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

5

Koch, Helmut. « Group Algebras of pro-p Groups ». Dans Springer Monographs in Mathematics, 59–76. Berlin, Heidelberg : Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04967-9_8.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

6

Klaas, Gundel, Charles R. Leedham-Green et Wilhelm Plesken. « p-adically simple groups $$(\tilde p - groups)$$ ». Dans Linear Pro-p-Groups of Finite Width, 12–20. Berlin, Heidelberg : Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/bfb0094089.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

7

Boston, Nigel, et Harris Nover. « Computing Pro-P Galois Groups ». Dans Lecture Notes in Computer Science, 1–10. Berlin, Heidelberg : Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11792086_1.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

8

Koch, Helmut. « Presentation of pro-p Groups ». Dans Springer Monographs in Mathematics, 53–58. Berlin, Heidelberg : Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04967-9_7.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

9

Leedham-Green, C. R., et S. McKay. « On the Classification of p-groups and pro-p Groups ». Dans New Horizons in pro-p Groups, 55–74. Boston, MA : Birkhäuser Boston, 2000. http://dx.doi.org/10.1007/978-1-4612-1380-2_2.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

10

Klaas, Gundel, Charles R. Leedham-Green et Wilhelm Plesken. « Chevalley groups ». Dans Linear Pro-p-Groups of Finite Width, 26–29. Berlin, Heidelberg : Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/bfb0094091.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Actes de conférences sur le sujet "Pro-p groups"

1

WEIGEL, THOMAS. « p-Projective groups and pro-p trees ». Dans Proceedings of the Conference. WORLD SCIENTIFIC, 2009. http://dx.doi.org/10.1142/9789814277808_0021.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

2

HERFORT, W., et P. A. ZALESSKII. « FINITELY GENERATED FREE BY Cpn PRO-p GROUPS ». Dans Proceedings of the Conference. WORLD SCIENTIFIC, 2011. http://dx.doi.org/10.1142/9789814350051_0012.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

3

ACCIARRI, C., et G. A. FERNÁNDEZ-ALCOBER. « POSITIVE LAWS ON GENERATORS IN POWERFUL PRO-p GROUPS ». Dans Proceedings of the Conference. WORLD SCIENTIFIC, 2011. http://dx.doi.org/10.1142/9789814350051_0001.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

4

Milazzotto, F., M. Carelli, C. Citone, G. Di Macro Tullio, G. C. Gambelli, P. Giampaolo, U. Malinconico, C. Polizzi et U. Cornelli. « EFFECTIVENESS OF DEFIBROTIDE IN THE TREATMENT OF ACUTE MYOCARDIAL INFARCTION ». Dans XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643146.

Texte intégral

Résumé :

Defibrotide (D) is an extractive polydesoxyribonucleotide. In preclinical studies the product was shown to be active as a pro -fibrinolytic, antithrombotic and thrombolytic agent while comply tely devoid of anticoagulant activity. In animal models, D was found to afford striking protection from the effects of acute lethal and non lethal myocardial ischemia as well as from myo -cardial injury following reperfusion. In this open single - blim trial, D was administered to patients with acute myocardial infaj ction (AMI) for the prevention of complicating arrhythmias; throy bus formation, pericarditis, etc.Sixty patients with AMI were divided randomly into two groups of 30 patients each. One group was treated with D by 6-hour drip infusion for 3 consecutive days (2.8 g on the first day, then 2.4 g daily). The other group was treated with equal volumes of physiological salt solution. All patients received conventional trea_t ment for AMI. The two trial groups were sufficiently homogeneous in terms of AMI type, age and sex distribution, PCT, Forrester index, Holter, and Peel index. D treatment proved effective in reducing the incidence of severe arrhythmia (p < 0.05), thrombus formation (p < 0.05), and pericarditis (p < 0.01). CPK, TT and PTT readings were not modified by the treatment; the incidence of post-AMI angina and the number of deaths (4 in each group) were similar in the two groups. The results of this pilot study are encouraging; further clinical trials are currently in progress to assess D activity in larger groups of patients treated with the product at higher dosages.

Styles APA, Harvard, Vancouver, ISO, etc.

5

Rohozneanu, Dan mihai. « USING SPECIALIZED SOFTWARE FOR MONITORING SPORT TRAINING PROGRAM OF JUNIOR HANDBALL PLAYERS ». Dans eLSE 2014. Editura Universitatii Nationale de Aparare "Carol I", 2014. http://dx.doi.org/10.12753/2066-026x-14-258.

Texte intégral

Résumé :

The role of the preparation is to ensure the optimal development of handball specific motor skills and effort capacity - it is the foundation to increase the performance capacity. The sports training components are present in all stages of sports training with different shares depending on the objectives. A good physical training provides the motrical support for efficient execution of technical content, which in turn is necessary for the realization of the tactical actions. Psychological and theoretical components, along with other components, provide training valorization to successfully participate in competitions. The purpose of this research is to identify the role of specialized software in monitoring the sport preparation to lead to optimizing sport training for junior handball players with consequences of increasing / improving sports performance. The experimental investigation involved the use of specific research methods like the study of literature, observation, tests and control samples, experiment, statistical and mathematical analysis and interpretation of data, graphics. In conducting this research there have been used the following control tests that were applied to the subjects of the two groups by the Myotest device and analyzed after with Myotest PRO software. The control tests were designed to highlight the specific indicators of the preparation for the handball game: bench press, half squat, jump-pliometry, countermovement jump, squat jump, bench press profile, half squat profile. These control tests were applied three times during the research (initial test, intermediate test, final test). The average progress for experimental group was 16.88% (min. - 3.66%, max. - 17.99%) and for control group - 8.17% (min. - 1.73%, max. - 12.5%). After applying Student test for experimental group the values were between 4.19 and 9.19 (p<0.01) and for control group between 2.93 and 4.27 (p<0.01). The research has great practical significance in preparing junior handball players, by using electronic device and specialized software, being useful for handball coaches and teachers working at this level, due to the results of the experiment implementation. The purpose was to ensure the premises achieving effective training in order to meet the training objectives and the performance targets.

Styles APA, Harvard, Vancouver, ISO, etc.

6

Berruyer, M., et M. Dechavanne. « HAEMOSTASIS CHANGES FOLLOWING TOTAL HIP REPLACEMENT IN A RANDOMIZED TRIAL WITH LMW HEPARIN (KABI 2165) AND ADJUSTED DOSE STANDARD HEPARIN ». Dans XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643218.

Texte intégral

Résumé :

70 patients were randomized to 3 groups. Group I : patients received 5,000 IU calciparineR subcutaneously given 2h before operation, twice a day for 3 days and then, doses were adjusted ty heparin levels. Groups II and III : 2,500 IU Kabi 2165 were given instead of calciparineR, but in group III, a single daily dose of 5,000 IU Kabi 2165 was administered from the third day. Fibrino-peptide A (FPA), FPA generation, D-dimers were measured in plasma by ELISA methods. Anti Xa activity, Xa generation, heparin cofactor II (HC II), antithrombin III (AT III) were assayed in plasma using amidolytic methods. Serial measurements were done : pre-operatively, 2 and 8h after the first heparin injection and on the 7th post-operative day, before heparin administration. Pre-operatively, the mean level of D-dimers was higher (p<0.05) in 9 patients with bleeding complications after surgery (0.83 ± 0.57 pg/ml) compared to other patients (0.42 ± 0.33 pg/ml) 2h after heparin injection : 1) Xa activity was lower (p<0.001) in group I (<0.05 IU/ml) than in groups II and III (0.137 ± 0.1 IU/ml) ; 2) inhibition of Xa generation decreased (p<0.001) in group I (11.7 ± 8%) compared to that in groups II and III (25.8 ± 13%) ; 3) inhibition of FPA generation was lower (p<0.05) in group I (27.1 ± 32.2%) than in groups II and III (45.7 ± 29.2%) ; 4) diminution of D-dimers under heparin (0.37 ± 0.28 pg/ml) was only significant (p<0.05) in groups II and III. 8h after the first heparin injection, in all groups : 1) D-dimers increased (p<0.001) compared to pre-operative values ; 2) AT III and HC II diminished (p<0.001) ; 3) no anti Xa activity and no inhibition of Xa and FPA generation were found. On the 7th day : 1) 4 patiertts with deep vein thrombosis had higher FPA than other patients ; 2) AT III but not HC II fell in group I (p<0.05) ; 3) no anti Xa activity and no inhibition of Xa and FPA generation were observed in all groups. In conclusion : 1) although clinical results are similar in the 3 groups, Xa activity, Xa generation, FPA generation change differently according to the heparin used ; 2) the occurence of deep vein thrombosis is followed by an FPA increase and bleeding complications are correlated with a high level of pre-operative D-dimers.

Styles APA, Harvard, Vancouver, ISO, etc.

7

Teddy Weiss, A., David G. Fine, David Applebaum, Sima Welber, Dan Sapoznikov, Chaim Lotan, Morris Mosseri, Yonathan Hasin et Meryyn S. Gotsman. « PREHOSPITAL CORONARY THROMBOLYSIS : A NEW STRATEGY IN ACUTE MYOCARDIAL INFARCTION ». Dans XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1642979.

Texte intégral

Résumé :

Thirty-four patients with acute myocardial infarction were treated prospectively using a new strategy of pre-hospital intravenous streptokinase given by a physician-operated mobile intensive care unit. Prehospital treated patients who had experienced no previous myocardial infarction were compared to a similar group treated with streptokinase in-hospital. All patients underwent cardiac catheterization on day 6.Patients receiving streptokinase in the pre-hospital phase of acute myocardial infarction had smaller infarcts and better residual myocardial function than the group given streptokinase in-hospital in terms of peak creatine phosphokinase (900 v.1298 IU, p=0.023), ejection fraction (62 v. 55%, p=0,004), computer-derived dysfunction index (427 v. 727, p=0.003), and electrocardiographic QRS score (4.1 v. 6.4, p=0.001). The only difference between these groups at baseline was the duration of pain prior to initiation of streptokinase therapy (1.0 ± 0.4 hours vs. 1.9 ± 0.9 hours). There were no major complications related to pre-hospital administration of streptokinase.Pre-hospital stretokinase infusion is feasible, safe and practical. It reduces ischemia time because treatment is not delayed until hospital arrival and therapy limits infarct size. Thrombolytic therapy for acute myocardial infarction can be initiated at home and should not be limited to hospitalized patients.

Styles APA, Harvard, Vancouver, ISO, etc.

8

Moradi, Niloofar, Edward Vlasic et Hany Moustapha. « Rapid Airfoil Design for Uncooled High Pressure Turbine Blades ». Dans ASME Turbo Expo 2015 : Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-42514.

Texte intégral

Résumé :

The aero-engine design process is highly iterative, multidisciplinary in nature and complex. The success of any engine design depends on best exploiting and considering the interactions among the numerous traditional engineering disciplines such as aerodynamics and structures. More emphasis has been placed lately on system integration, cross disciplines leveraging of tools and multi-disciplinary-optimization at the preliminary design phase. This paper investigates the automation of the airfoil generation process, referred to as Rapid Airfoil 3D (RAF 3D), for uncooled high pressure turbine blades at the preliminary design phase. This Matlab based program, uses the turbine aero meanline (TAML) in parallel with a database of previously designed P&WC airfoils, in-house design rules and best practices to define a pre-detailed airfoil shape which can be fed back to other analytical groups for pre-detail analyses, such as for structures and vibrations. Resulting airfoil shapes have been aerodynamically validated using an in-house 3D RANS code. RAF 3D will shorten the turnaround time for P&WC’s turbine aerodynamics group to provide a preliminary 3D airfoil shape to turbine structures group by up to a factor of ten. Additionally, the preliminary assessments of stress and vibration specialists will be more accurate as their assessments will be based on an airfoil that has had inputs from all functional groups even though it is “first pass” design.

Styles APA, Harvard, Vancouver, ISO, etc.

9

Abbate, R., M. Boddi, S. Favilla, G. Costanzo, R. Paniccia et G. F. Paniccia. « WHOLE BLOOD AGGREGOMETER IN THE ASSESSMENT OF PLATELET HYPER-AGGREGABILITY ». Dans XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644554.

Texte intégral

Résumé :

The aim of this study has been to investigate the reliability of platelet aggregation in whole blood in some clinical conditions associated to thromboembolic complications.18 healthy subjects, 15 patients affected by ischemic heart disease (IHD) and 15 patients affected by insulin independent diabetes, free of vascular complications, were studied. Collagen induced (2.5 mg/L f.c.) platelet aggregation was evaluated both in whole blood (WB) by using impedance whole blood aggregometer (Chrono-Log) and in platelet rich plasma (PRP) by Born aggregometer. Aggregation was significantly higher in whole blood than in PRP in all the groups investigated (p < 0.01). No significant difference was found in PRP aggregation among the three groups, whereas WB aggregation was significantly higher in the two patient groups (IHD 79.5 + 14.2%, Diabetes 81.3 + 17.6%) than in controls (64.8 ± 14.1%) (p < 0.01 for both comparisons). No relationship was found between WB aggregation and Hct or platelet number in any of the groups studied. A slight relationship was found between megathrombocyte count and WE aggregation values (r=0.31, p < 0.05).Collagen platelet aggregation in WB seems to be provided with higher sensibility than PRP aggregation in detecting hyper-aggregability, probably because it does not imply the selection of platelet populations with loss of larger platelets and of other blood cells.

Styles APA, Harvard, Vancouver, ISO, etc.

10

Maryani, Diani, et Liza Anggraeni. « Effect of Hypnoparenting on Nutritional Status in Preschool Age Children at Al-Fathir Kindergarten, Tangerang, Banten ». Dans The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.02.23.

Texte intégral

Résumé :

Background: Malnutrition is estimated to account for more than one third of all child deaths, although it is rarely listed as a direct cause. Hypnoparenting is an attempt by parents to bring their children into the subconscious. This study aimed to determine the effect of hypnoparenting on nutritional status in preschool age children at Al-Fathir kindergarten, Tangerang, Banten. Subjects and Method: This was a quasi-experiment with a non-randomized pretest posttest design was conducted at Al-Fathir Kindergarten, Tangerang City, Banten Province from April to August 2020. A sample of 36 selected by purposive sampling. This study was divided into 2 groups: (1) 18 respondents were given hypnoparenting treatment and for the second group; and (2) 18 respondents were not given hypnoparenting. The dependent variable was nutritional. The independent was hypnoparenting. The data were analyzed by non-parametric tests. Results: There was a significant difference between nutritional status before hypnoparenting (p= 0.293) and nutritional status after hypnoparenting (p= 0.406) but there was no effect between changes in nutritional status made in the intervention group (Mean= 16.25; SD= 2.46; p= 0.222) and the control group (Mean= 16.18; SD= 3.88; p= 0.150). Conclusion: Hypnoparenting has effect in nutritional status of preschool age children, but it is statistically non-significant. Next, researchers will conduct further research on overcoming problems in children, especially nutritional problems, and the parents/guardians of students to be more effective in doing hypnoparenting to be maximized. Keyword: BMI, age, pre-school, hypnoparenting Correspondence: Diani Maryani, Academy of Midwifery Karya Bunda Husada, Tangerang, Banten. E-mail: dhianeyrs@gmail.com. Mobile: 081381234008. DOI: https://doi.org/10.26911/the7thicph.02.23

Styles APA, Harvard, Vancouver, ISO, etc.

Rapports d'organisations sur le sujet "Pro-p groups"

1

Kumban, Wannisa, Anoma Santiworakul et Salila Cetthakrikul. The effect of Animal Assisted Therapy on physical activity in elderly. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, septembre 2022. http://dx.doi.org/10.37766/inplasy2022.9.0049.

Texte intégral

Résumé :

Review question / Objective: What are the effect of Animal Assisted Therapy on physical activity in elderly. PICOs P: Elderly; I: Animal Assisted Therapy; C: Compare; O: Physical activity, physical fitness, health-related fitness; S: experimental study/ compare between group/ pre-post test. Eligibility criteria: Inclusion criteria comprised any studies that provided experimental study design or observational data on cross-sectional comparisons between groups. The outcome analyzed in this review was the effect of animal assisted or pet or human-animal interaction on physical activity that was studied in all elderly populations (age > 60 years), in any setting e.g., home, community-based, or hospital. The articles were published in English full-text articles only between 2012 and 2022.

Styles APA, Harvard, Vancouver, ISO, etc.

2

El Halawani, Mohamed, et Israel Rozenboim. Environmental factors affecting the decline in reproductive efficiency of turkey hens : Mediation by vasoactive intestinal peptide. United States Department of Agriculture, janvier 2007. http://dx.doi.org/10.32747/2007.7696508.bard.

Texte intégral

Résumé :

Reproductive failure associated with heat stress is a well known phenomenon in avian species. Increased prolactin (PRL) levels in response to heat stress have been suggested as a mechanism involved in this reproductive malfunction. To test this hypothesis, laying female turkeys were subjected to 40°C for 12 h during the photo-phase daily or maintained at 24–26°C. Birds in each group received oral treatment with parachlorophenyalanine (PCPA; 50 mg/kg BW/day for 3 days), an inhibitor of serotonin (5-HT) biosynthesis; or immunized against vasoactive intestinal peptide (VIP). Both treatments are known to reduce circulating PRL levels. Non treated birds were included as controls. In the control group, high ambient temperature terminated egg laying, induced ovarian regression, reduced plasma luteinizing hormone (LH) and ovarian steroids (progesterone, testosterone, estradiol) levels, and increased plasma PRL levels and the incidence of incubation behavior. Pretreatment with PCPA reduced (P< 0.05) heat stress-induced decline in egg production, increase in PRL levels, and expression of incubation behavior. Plasma LH and ovarian steroid levels of heat stressed birds were restored to that of controls by PCPA treatment. As in PCPA-treated birds, VIP immunoneutralization of heat-stressed turkeys reduced (P< 0.05) circulating PRL levels and prevented the expression of incubation behavior. But it did not restore the decline in LH, ovarian steroids, and egg production (P> 0.05). The present findings indicate that the detrimental effect of high temperature on reproductive performance may not be related to the elevated PRL levels in heat-stressed birds but to mechanism(s) that involve 5-HT neurotransmission and the induction of hyperthermia.

Styles APA, Harvard, Vancouver, ISO, etc.

3

Meng, Shu-Qiao, Ai-Guo Chen, Wen-Xia Tong, Shi-Meng Wang et Zhi-Yuan Sun. The Effect of Physical Activity on Motor Skills Disorder of Children with Autism Spectrum Disorder : A Meta-Analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, février 2023. http://dx.doi.org/10.37766/inplasy2023.2.0068.

Texte intégral

Résumé :

Review question / Objective: Meta-analysis was used to systematically investigate the improvement effect of physical activity on motor skills disorder in children with autism spectrum disorder (ASD), and to summarize the best exercise program. To obtain high-quality study results, the PICOS principles are usually relied upon to help complete the study design during the construction of the scientific question. That is, the target population (P) for evidence application is children with ASD; the intervention (I) is motor training such as aerobic, resistance exercise or combined exercise; the comparative measure (C) is other non-motor interventions; the outcome indicators (O) are improvements in gross motor ability, fine motor ability, and balance and coordination; and the type of evidence is a randomized controlled trial. Eligibility criteria: Subjects included in the paper were required to be children with ASD diagnosed by an authoritative institution, with consistent pre-experimental characteristics; with a complete intervention program and accurate post-test results, and the type of study in the literature was a randomized controlled trial.

Styles APA, Harvard, Vancouver, ISO, etc.

4

Schiller, Brandon, Tara Hutchinson et Kelly Cobeen. Cripple Wall Small-Component Test Program : Dry Specimens (PEER-CEA Project). Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, novembre 2020. http://dx.doi.org/10.55461/vsjs5869.

Texte intégral

Résumé :

This report is one of a series of reports documenting the methods and findings of a multi-year, multi-disciplinary project coordinated by the Pacific Earthquake Engineering Research Center (PEER) and funded by the California Earthquake Authority (CEA). The overall project is titled “Quantifying the Performance of Retrofit of Cripple Walls and Sill Anchorage in Single-Family Wood-Frame Buildings,” henceforth referred to as the “PEER–CEA Project.” The overall objective of the PEER–CEA Project is to provide scientifically based information (e.g., testing, analysis, and resulting loss models) that measures and documents seismic performance of wood-frame houses with cripple wall and sill anchorage deficiencies as well as retrofitted conditions that address those deficiencies. Three primary tasks support the earthquake loss-modeling effort. They are: (1) the development of ground motions and loading protocols that accurately represent the diversity of seismic hazard in California; (2) the execution of a suite of quasi-static cyclic experiments to measure and document the performance of cripple wall and sill anchorage deficiencies to develop and populate loss models; and (3) nonlinear response history analysis on cripple wall-supported buildings and their components. This report is a product of Working Group 4: Testing, whose central focus was to experimentally investigate the seismic performance of retrofitted and existing cripple walls. This present report focuses on non-stucco or “dry” exterior finishes. Paralleled by a large-component test program conducted at the University of California, Berkeley (UC Berkeley) [Cobeen et al. 2020], the present report involves two of multiple phases of small-component tests conducted at University of California San Diego (UC San Diego). Details representative of era-specific construction–specifically the most vulnerable pre-1960s construction–are of predominant focus in the present effort. Parameters examined are cripple wall height, finish style, gravity load, boundary conditions, anchorage, and deterioration. This report addresses all eight specimens in the second phase of testing and three of the six specimens in the fourth phase of testing. Although conducted in different testing phases, their results are combined here to co-locate observations regarding the behavior of all dry finished specimens. Experiments involved imposition of combined vertical loading and quasi-static reversed cyclic lateral load onto eleven cripple walls. Each specimen was 12 ft in length and 2-ft or 6-ft in height. All specimens in this report were constructed with the same boundary conditions on the top, bottom, and corners of the walls. Parameters addressed in this report include: dry exterior finish type (shiplap horizontal lumber siding, shiplap horizontal lumber siding over diagonal lumber sheathing, and T1-11 wood structural panels), cripple wall height, vertical load, and the retrofitted condition. Details of the test specimens, testing protocol (including instrumentation), and measured as well as physical observations are summarized. Results from these experiments are intended to support advancement of numerical modeling tools, which ultimately will inform seismic loss models capable of quantifying the reduction of loss achieved by applying state-of-practice retrofit methods as identified in FEMA P-1100 Vulnerability-Base Seismic Assessment and Retrofit of One- and Two-Family Dwellings.

Styles APA, Harvard, Vancouver, ISO, etc.

5

Schiller, Brandon, Tara Hutchinson et Kelly Cobeen. Cripple Wall Small-Component Test Program : Wet Specimens I (PEER-CEA Project). Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, novembre 2020. http://dx.doi.org/10.55461/dqhf2112.

Texte intégral

Résumé :

This report is one of a series of reports documenting the methods and findings of a multi-year, multi-disciplinary project coordinated by the Pacific Earthquake Engineering Research Center (PEER and funded by the California Earthquake Authority (CEA). The overall project is titled “Quantifying the Performance of Retrofit of Cripple Walls and Sill Anchorage in Single-Family Wood-Frame Buildings,” henceforth referred to as the “PEER–CEA Project.” The overall objective of the PEER–CEA Project is to provide scientifically based information (e.g., testing, analysis, and resulting loss models) that measure and assess the effectiveness of seismic retrofit to reduce the risk of damage and associated losses (repair costs) of wood-frame houses with cripple wall and sill anchorage deficiencies as well as retrofitted conditions that address those deficiencies. Tasks that support and inform the loss-modeling effort are: (1) collecting and summarizing existing information and results of previous research on the performance of wood-frame houses; (2) identifying construction features to characterize alternative variants of wood-frame houses; (3) characterizing earthquake hazard and ground motions at representative sites in California; (4) developing cyclic loading protocols and conducting laboratory tests of cripple wall panels, wood-frame wall subassemblies, and sill anchorages to measure and document their response (strength and stiffness) under cyclic loading; and (5) the computer modeling, simulations, and the development of loss models as informed by a workshop with claims adjustors. This report is a product of Working Group 4: Testing and focuses on the first phase of an experimental investigation to study the seismic performance of retrofitted and existing cripple walls with sill anchorage. Paralleled by a large-component test program conducted at the University of California [Cobeen et al. 2020], the present study involves the first of multiple phases of small-component tests conducted at the UC San Diego. Details representative of era-specific construction, specifically the most vulnerable pre-1960s construction, are of predominant focus in the present effort. Parameters examined are cripple wall height, finish materials, gravity load, boundary conditions, anchorage, and deterioration. This report addresses the first phase of testing, which consisted of six specimens. Phase 1 including quasi-static reversed cyclic lateral load testing of six 12-ft-long, 2-ft high cripple walls. All specimens in this phase were finished on their exterior with stucco over horizontal sheathing (referred to as a “wet” finish), a finish noted to be common of dwellings built in California before 1945. Parameters addressed in this first phase include: boundary conditions on the top, bottom, and corners of the walls, attachment of the sill to the foundation, and the retrofitted condition. Details of the test specimens, testing protocol, instrumentation; and measured as well as physical observations are summarized in this report. In addition, this report discusses the rationale and scope of subsequent small-component test phases. Companion reports present these test phases considering, amongst other variables, the impacts of dry finishes and cripple wall height (Phases 2–4). Results from these experiments are intended to provide an experimental basis to support numerical modeling used to develop loss models, which are intended to quantify the reduction of loss achieved by applying state-of-practice retrofit methods as identified in FEMA P-1100, Vulnerability-Base Seismic Assessment and Retrofit of One- and Two-Family Dwellings.

Styles APA, Harvard, Vancouver, ISO, etc.

6

Schiller, Brandon, Tara Hutchinson et Kelly Cobeen. Cripple Wall Small-Component Test Program : Wet Specimens II (PEER-CEA Project). Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, novembre 2020. http://dx.doi.org/10.55461/ldbn4070.

Texte intégral

Résumé :

This report is one of a series of reports documenting the methods and findings of a multi-year, multi-disciplinary project coordinated by the Pacific Earthquake Engineering Research Center (PEER and funded by the California Earthquake Authority (CEA). The overall project is titled “Quantifying the Performance of Retrofit of Cripple Walls and Sill Anchorage in Single-Family Wood-Frame Buildings,” henceforth referred to as the “PEER–CEA Project.” The overall objective of the PEER–CEA Project is to provide scientifically based information (e.g., testing, analysis, and resulting loss models) that measure and assess the effectiveness of seismic retrofit to reduce the risk of damage and associated losses (repair costs) of wood-frame houses with cripple wall and sill anchorage deficiencies as well as retrofitted conditions that address those deficiencies. Tasks that support and inform the loss-modeling effort are: (1) collecting and summarizing existing information and results of previous research on the performance of wood-frame houses; (2) identifying construction features to characterize alternative variants of wood-frame houses; (3) characterizing earthquake hazard and ground motions at representative sites in California; (4) developing cyclic loading protocols and conducting laboratory tests of cripple wall panels, wood-frame wall subassemblies, and sill anchorages to measure and document their response (strength and stiffness) under cyclic loading; and (5) the computer modeling, simulations, and the development of loss models as informed by a workshop with claims adjustors. This report is a product of Working Group 4 (WG4): Testing, whose central focus was to experimentally investigate the seismic performance of retrofitted and existing cripple walls. This report focuses stucco or “wet” exterior finishes. Paralleled by a large-component test program conducted at the University of California, Berkeley (UC Berkeley) [Cobeen et al. 2020], the present study involves two of multiple phases of small-component tests conducted at the University of California San Diego (UC San Diego). Details representative of era-specific construction, specifically the most vulnerable pre-1960s construction, are of predominant focus in the present effort. Parameters examined are cripple wall height, finish style, gravity load, boundary conditions, anchorage, and deterioration. This report addresses the third phase of testing, which consisted of eight specimens, as well as half of the fourth phase of testing, which consisted of six specimens where three will be discussed. Although conducted in different phases, their results are combined here to co-locate observations regarding the behavior of the second phase the wet (stucco) finished specimens. The results of first phase of wet specimen tests were presented in Schiller et al. [2020(a)]. Experiments involved imposition of combined vertical loading and quasi-static reversed cyclic lateral load onto ten cripple walls of 12 ft long and 2 or 6 ft high. One cripple wall was tested with a monotonic loading protocol. All specimens in this report were constructed with the same boundary conditions on the top and corners of the walls as well as being tested with the same vertical load. Parameters addressed in this report include: wet exterior finishes (stucco over framing, stucco over horizontal lumber sheathing, and stucco over diagonal lumber sheathing), cripple wall height, loading protocol, anchorage condition, boundary condition at the bottom of the walls, and the retrofitted condition. Details of the test specimens, testing protocol, including instrumentation; and measured as well as physical observations are summarized in this report. Companion reports present phases of the tests considering, amongst other variables, impacts of various boundary conditions, stucco (wet) and non-stucco (dry) finishes, vertical load, cripple wall height, and anchorage condition. Results from these experiments are intended to support advancement of numerical modeling tools, which ultimately will inform seismic loss models capable of quantifying the reduction of loss achieved by applying state-of-practice retrofit methods as identified in FEMA P-1100,Vulnerability-Base Seismic Assessment and Retrofit of One- and Two-Family Dwellings.

Styles APA, Harvard, Vancouver, ISO, etc.

7

Wideman, Jr., Robert F., Nicholas B. Anthony, Avigdor Cahaner, Alan Shlosberg, Michel Bellaiche et William B. Roush. Integrated Approach to Evaluating Inherited Predictors of Resistance to Pulmonary Hypertension Syndrome (Ascites) in Fast Growing Broiler Chickens. United States Department of Agriculture, décembre 2000. http://dx.doi.org/10.32747/2000.7575287.bard.

Texte intégral

Résumé :

Background PHS (pulmonary hypertension syndrome, ascites syndrome) is a serious cause of loss in the broiler industry, and is a prime example of an undesirable side effect of successful genetic development that may be deleteriously manifested by factors in the environment of growing broilers. Basically, continuous and pinpointed selection for rapid growth in broilers has led to higher oxygen demand and consequently to more frequent manifestation of an inherent potential cardiopulmonary incapability to sufficiently oxygenate the arterial blood. The multifaceted causes and modifiers of PHS make research into finding solutions to the syndrome a complex and multi threaded challenge. This research used several directions to better understand the development of PHS and to probe possible means of achieving a goal of monitoring and increasing resistance to the syndrome. Research Objectives (1) To evaluate the growth dynamics of individuals within breeding stocks and their correlation with individual susceptibility or resistance to PHS; (2) To compile data on diagnostic indices found in this work to be predictive for PHS, during exposure to experimental protocols known to trigger PHS; (3) To conduct detailed physiological evaluations of cardiopulmonary function in broilers; (4) To compile data on growth dynamics and other diagnostic indices in existing lines selected for susceptibility or resistance to PHS; (5) To integrate growth dynamics and other diagnostic data within appropriate statistical procedures to provide geneticists with predictive indices that characterize resistance or susceptibility to PHS. Revisions In the first year, the US team acquired the costly Peckode weigh platform / individual bird I.D. system that was to provide the continuous (several times each day), automated weighing of birds, for a comprehensive monitoring of growth dynamics. However, data generated were found to be inaccurate and irreproducible, so making its use implausible. Henceforth, weighing was manual, this highly labor intensive work precluding some of the original objectives of using such a strategy of growth dynamics in selection procedures involving thousands of birds. Major conclusions, solutions, achievements 1. Healthy broilers were found to have greater oscillations in growth velocity and acceleration than PHS susceptible birds. This proved the scientific validity of our original hypothesis that such differences occur. 2. Growth rate in the first week is higher in PHS-susceptible than in PHS-resistant chicks. Artificial neural network accurately distinguished differences between the two groups based on growth patterns in this period. 3. In the US, the unilateral pulmonary occlusion technique was used in collaboration with a major broiler breeding company to create a commercial broiler line that is highly resistant to PHS induced by fast growth and low ambient temperatures. 4. In Israel, lines were obtained by genetic selection on PHS mortality after cold exposure in a dam-line population comprising of 85 sire families. The wide range of PHS incidence per family (0-50%), high heritability (about 0.6), and the results in cold challenged progeny, suggested a highly effective and relatively easy means for selection for PHS resistance 5. The best minimally-invasive diagnostic indices for prediction of PHS resistance were found to be oximetry, hematocrit values, heart rate and electrocardiographic (ECG) lead II waves. Some differences in results were found between the US and Israeli teams, probably reflecting genetic differences in the broiler strains used in the two countries. For instance the US team found the S wave amplitude to predict PHS susceptibility well, whereas the Israeli team found the P wave amplitude to be a better valid predictor. 6. Comprehensive physiological studies further increased knowledge on the development of PHS cardiopulmonary characteristics of pre-ascitic birds, pulmonary arterial wedge pressures, hypotension/kidney response, pulmonary hemodynamic responses to vasoactive mediators were all examined in depth. Implications, scientific and agricultural Substantial progress has been made in understanding the genetic and environmental factors involved in PHS, and their interaction. The two teams each successfully developed different selection programs, by surgical means and by divergent selection under cold challenge. Monitoring of the progress and success of the programs was done be using the in-depth estimations that this research engendered on the reliability and value of non-invasive predictive parameters. These findings helped corroborate the validity of practical means to improve PHT resistance by research-based programs of selection.

Styles APA, Harvard, Vancouver, ISO, etc.

Nous offrons des réductions sur tous les plans premium pour les auteurs dont les œuvres sont incluses dans des sélections littéraires thématiques. Contactez-nous pour obtenir un code promo unique!