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5. On a Class of Nonlinear Elliptic Equations with General Growth in the Gradient.

Author

Betta, M. Francesca, Mercaldo, Anna, and Volpicelli, Roberta

Subjects
*NONLINEAR equations, *BOUNDARY value problems, *SCHAUDER bases, *ELLIPTIC equations, *LORENTZ spaces
Abstract

In this paper, we prove an existence and uniqueness result for a class of Dirichlet boundary value problems whose model is − Δ p u = β | ∇ u | q + c | u | p − 2 u + f in   Ω , u = 0 on   ∂ Ω , where Ω is an open bounded subset of R N , N ≥ 2 , 1 < p < N , Δ p u is the so-called p-Laplace operator, and p − 1 < q < p . We assume that β is a positive constant, c and f are measurable functions belonging to suitable Lorentz spaces. Our approach is based on Schauder fixed point theorem. [ABSTRACT FROM AUTHOR]

Published
2024
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6. Pulse wave amplitude drops (PWAD) : a new biomarker of cardiovascular risk in patients with obstructive sleep apnea in HypnoLaus and ISAACC cohorts

Author

Solelhac, G., primary, Sánchez-de-la-Torre, M., additional, Berger, M., additional, Hirotsu, C., additional, Marchi, N.A., additional, Waeber, A., additional, Gracia-Lavedan, E., additional, Zapater, A., additional, Bernadi, G., additional, Betta, M., additional, Marques-Vidal, P., additional, Vollenweider, P., additional, Vaucher, J., additional, Siclari, F., additional, Barbé, F., additional, and Heinzer, R., additional

Published
2022
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8. Pulse wave amplitude drops (PWAD) index: a biomarker of cardiovascular risk in patients with obstructive sleep apnea in three cohorts.

Author

Solelhac, G, primary, Sánchez-De-La-Torre, M, additional, Blanchard, M, additional, Berger, M, additional, Marchi, N A, additional, Hirotsu, C, additional, Bernardi, G, additional, Betta, M, additional, Vollenweider, P, additional, Vaucher, J, additional, Zapater, A, additional, Gracia-Lavedan, E, additional, Marques-Vidal, P, additional, Barbé, F, additional, Gagnadoux, F, additional, and Heinzer, R, additional

Published
2022
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17. The corpus callosum is essential for the cross-hemispheric propagation of sleep slow waves: a high-density EEG study in totally callosotomized patients

Author

Avvenuti, G., primary, Handjaras, G., additional, Betta, M., additional, Cataldi, J., additional, Imperatori, L.S., additional, Lattanzi, S., additional, Riedner, B., additional, Pietrini, P., additional, Ricciardi, E., additional, Tononi, G., additional, Siclari, F., additional, Polonara, G., additional, Fabri, M., additional, Silvestrini, M., additional, Bellesi, M., additional, and Bernardi, G., additional

Published
2019
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28. Eigenvalue problems and Gauss measure

Author

BETTA M. F, CHIACCHIO F, FERONE, Adele, Betta, M. F., Chiacchio, Francesco, Ferone, A., Chiacchio, F, and Ferone, Adele

Published
2006

30. Frações lábeis da matéria orgânica em sistema de cultivo com palha de braquiária e sorgo

Author

ROSSI, C. Q., PEREIRA, M. G., GIÁCOMO, S. G., BETTA, M., POLIDORO, J. C., Celeste Queiroz Rossi, UFRRJ, Marcos Gervasio Pereira, UFRRJ, Simone Guimarães Giácomo, UFRRJ, Marconi Betta, FESURV, and JOSE CARLOS POLIDORO, CNPS.

Subjects
Capim braquiária, Sorgo, Agricultura, Palha
Abstract

Resumo - O papel fundamental da matéria orgânica nas características físicas, químicas e biológicas do solo, justifica o crescente interesse pela identificação de sistemas de uso e de manejo que contribuam para o aumento do estoque de carbono em solos tropicais. O objetivo desse trabalho foi avaliar o estoque de carbono (EstC) na fração particulada (>53 µm) da matéria orgânica do solo e na fração associada aos minerais (

Published
2012

32. Potential use of chlorimuron-ethyl, imazethapyr and cloransulam-methyl in common bean crop

Author

Procopio,S.O., Braz,A.J.B.P., Barroso,A.L.L., Cargnelutti Filho,A., Cruvinel,K.L., Betta,M., Braz,G.B.P., Fraga Filho,J.J.S., and Cunha Júnior,L.D.

Subjects
ALS inhibitors, inibidores de ALS, imidazolinone, sulfonylurea, fomesafen, imidazolinona, Phaseolus vulgaris, sulfonilureia
Abstract

O objetivo deste trabalho foi avaliar a seletividade dos herbicidas chlorimuron-ethyl, imazethapyr e cloransulam-methyl, aplicados em associação com o herbicida fomesafen, a dez cultivares de feijão. O experimento foi conduzido no município de Rio Verde-GO, no plantio das águas, na safra de 2005/2006. O delineamento experimental utilizado foi de blocos ao acaso, em parcelas subdivididas, com três repetições, sendo o fator da parcela principal os tratamentos com herbicidas [fomesafen (225 g ha-1 ); fomesafen (225 g ha-1 ) + chlorimuron-ethyl (7,5 g ha-1 ); fomesafen (225 g ha-1 ) + imazethapyr (50 g ha-1); fomesafen (225 g ha-1) + cloransulam-methyl (30,24 g ha-1); e testemunha sem herbicida]; e o da subparcela, os cultivares (BRS Grafite, BRS Horizonte, Pérola, BRS Pitanga, BRS Pontal, BRS Requinte, BRS Supremo, BRS Timbó, BRS Valente e BRS Vereda). As parcelas foram mantidas capinadas, para que não houvesse interferência das plantas daninhas. Os tratamentos com herbicidas foram fitotóxicos; todavia, de forma geral, os sintomas mais severos foram verificados no tratamento que continha chlorimuron-ethyl. A associação de fomesafen com chlorimuron-ethyl provocou as maiores reduções na altura das plantas e no acúmulo de massa da parte aérea das plantas secas, além de prolongar o ciclo de maturação de todos os cultivares. A aplicação isolada de fomesafen reduziu a produtividade de grãos dos cultivares BRS Timbó e BRS Vereda. Quando se adicionou o imazethapyr ao fomesafen, observou-se redução na produtividade dos cultivares BRS Supremo, BRS Timbó e BRS Vereda. A adição de cloransulam-methyl, além de reduzir a produtividade desses três cultivares, também diminuiu a produtividade do cultivar BRS Requinte. Os cultivares Pérola, BRS Pitanga, BRS Pontal e BRS Valente não tiveram suas produtividades reduzidas pela mistura chlorimuron-ethyl + fomesafen. O imazethapyr mostrou potencial para ser utilizado na cultura do feijão. This study aimed to evaluate the selectivity of the herbicides chlorimuron-ethyl, imazethapyr and cloransulam-methyl when applied in association with fomesafen on ten common bean cultivars. The experiment was carried out in Rio Verde-Goias during the growing season of 2005/2006, in a completely randomized block design, with three replicates, in split-plots. The herbicide treatments [fomesafen (225 g ha-1 ), fomesafen (225 g ha-1 ) + chlorimuron-ethyl (7.5 g ha-1 ), fomesafen (225 g ha-1 ) + imazethapyr (50 g ha-1 ), fomesafen (225 g ha-1 ) + cloransulam-methyl (30.24 g ha-1 ), and control without herbicide] were tested in the plots and the cultivars (BRS Grafite, BRS Horizonte, Pérola, BRS Pitanga, BRS Pontal, BRS Requinte, BRS Supremo, BRS Timbó, BRS Valente and BRS Vereda), in the split-plots. The plots were kept hoed to avoid weed interference. All treatments caused phytotoxicity to the cultivars, but the treatment with chlorimuron-ethyl showed more severe symptoms. This same treatment also resulted in greater reduction of plant height, shoot dry matter and an extended maturation cycle. The sole application of fomesafen caused a decrease in grain productivity of BRS Timbó, and BRS Vereda. When fomesafen was applied in a mixture with imazethapyr, a decrease in grain productivity was observed for the cultivars BRS Timbó, BRS Vereda, and BRS Supremo. Cloransulam-methyl addition led to a productivity reduction of these three cultivars and BRS Requinte, as well. The productivity of Pérola, BRS Pitanga, BRS Pontal, and BRS Valente cultivars was not affected by the application of chlorimuron-ethyl + fomesafen. Imazethapyr presented potential to be used in common bean crop.

Published
2009

34. Estoque de carbono e nutrientes em solos sob diferentes usos no Sudoeste Goiano

Author

FERREIRA FILHO, S. M., BETTA, M., BENITES, V. de M., SILVIO MARCOS FERREIRA FILHO, FESURV, MARCONI BETTA, FESURV, and VINICIUS DE MELO BENITES, CNPS.

Subjects
Soil nutrients, Carbono, Sudoeste Goiano, Fertilidade do Solo, Nutriente, Soil fertility, Carbon
Abstract

Esse trabalho teve como objetivo avaliar os estoques de carbono e a fertilidade de solos sob diferentes usos no sudoeste goiano.

Published
2008

35. Distribuição vertical de nutrientes em solos sob diferentes usos no Sudoeste Goiano

Author

FERREIRA FILHO, S. M., BETTA, M., GOMES, G. V., BENITES, V. de M., NAUMOV, A., SILVIO MARCOS FERREIRA FILHO, Universidade de Rio Verde, MARCONI BETTA, Universidade de Rio Verde, G. V. GOMES, UNIVERSIDADE DE RIO VERDE, VINICIUS DE MELO BENITES, CNPS, and A. NAUMOV, International Potash Institute.

Subjects
Sudoeste Goiano, Fertilidade do Solo, Soil profiles, Nutriente, Soil fertility, Perfil do Solo, Soil nutrients
Abstract

Esse trabalho teve por objetivo avaliar a distribuição de nutrientes em perfis de solos sob diferentes usos no sudoeste goiano, visando quantificar áreas de concentração causadas pelo uso agrícola desses solos.

Published
2008

36. Efeito da Brachiaria ruziziensis sobre a ciclagem do P, K e produtividade da soja

Author

BETTA, M., OLIVEIRA, D. D. de, FERREIRA FILLHO, S. M., CASTRO, D. da S., ARAÚJO, E. A. de C., BENITES, V. de M., SIMON, G., MARCONI BETTA, FESURV, DEIVITE DOMINGOS DE OLIVEIRA, FESURV, SILVIO MARCOS FERREIRA FILHO, FESURV, DEIVIDE DA SILVA CASTRO, FESURV, ELZA APARECIDA DE CAMPOS ARAÚJO, FESURV, VINICIUS DE MELO BENITES, CNPS, and GUSTAVO SIMON, FESURV.

Subjects
Soja, Potássio, Fósforo, Potassium, Brachiaria Ruziziensis, Soybeans, Phosphorus
Abstract

O objetivo deste trabalho foi avaliar a ciclagem do potássio e fósforo pela cultura da brachiária, e sua disponibilização para a cultura da soja.

Published
2008

37. Power as practice: A Micro-sociological Analysis of the Dynamics of Emancipatory Entrepreneurship

Author

Goss, D, Jones, R, Latham, J, Betta, M, Goss, D, Jones, R, Latham, J, and Betta, M

Abstract

This paper contributes to a recent movement to reframe entrepreneurship theory into a more critical and reflexive mode. It builds on the processual notion of entrepreneuring-asemancipation to theorise a balanced conception of agency and constraint rooted in the notion of power rituals. We develop a micro-sociological analysis of power rituals that conceives power reproduction and entrenchment as a ‘practice-based’ activity that focuses on what power holders and subordinates concretely do, think and feel. This makes emotion a key dimension of entrepreneurial agency and redefines constraining barriers to agency in terms of a social process of ‘barring’. This novel approach is illustrated using an autobiographical account of a social entrepreneurship project. On the basis of this analysis, a number of insights are provided into the ways in which the power-as-practice approach can inform wider debates in organization studies where the notions of agency and constraint are linked to issues of power and resistance.

Published
2011

38. Protecting the Vulnerable: Genetic Testing and Screening for Parentage, Immigration and Aboriginality

Author

Betta, M, Gesche, Astrid, Betta, M, and Gesche, Astrid

Abstract

As health care professions, law enforcement agencies, governments, employers, insurance companies and others rush to utilise genetic information about individuals with whom they interact or have relationships with, conflict may arise between different stakeholders. In such circumstances, it may be the function of ethics to balance competing interests and activities, explore alternatives and options and protect the vulnerable from harm. Ethics may explore and advise on issues of the moral life, but sometimes it needs the backup of constructive policy developments and the investigative, protective and guiding forces of the law to achieve a more mutually beneficial outcome. This chapter on DNA kinship testing is an example of such merging of forces, namely ethics, policy and law to protect the vulnerable. It portrays the effects of unethical behaviour on three different stakeholders and makes some recommendations on how to re-establish and protect the moral life. Genetic kinship testing can create multiple vulnerabilities, all of which can be experienced on an individual, societal and cultural level. Parentage testing stands as an example where vulnerability to an individual is created by not observing proper consent procedures; genetic identity testing for immigration purposes discusses identify fraud and the potential harm to society; and, lastly, DNA kinship testing of Australia's Indigenous and Torres Strait Islander peoples demonstrates that it is appropriate to sometimes let the socio-cultural triumph over the biological.

Published
2006

39. Genetic Testing and Human Genetic Databases

Author

Betta, M, Gesche, Astrid, Betta, M, and Gesche, Astrid

Abstract

Genetic databases would not exist without the input from donors. Their samples and their associated information are the foundation of their existence. Genetic databases contain very personal, sensitive information and, if misused, could lead to any number of potential harms for the donor. Consequently, the operation and use of genetic databases should meet the highest ethical standards backed up by effective regulations and legislation. The aim of this chapter is to first describe genetic databases and their function before turning to two of the most controversial ethical issues that surround genetic databases, namely privacy and informed consent and describe how the Australian Government has so far responded to these challenges. It will close by turning to an explicit example, that is, the National Criminal Investigation DNA Database (NCIDD), which is one of a web of databases overseen by the CrimTrac agency of Australia.

Published
2006

49. A comparison result related to Gauss measure

Author

Betta, M. Francesca, Brock, Friedman, Mercaldo, Anna, and Posteraro, M. Rosaria

Subjects
*MATHEMATICAL functions, *DIFFERENTIAL equations
Abstract

In this paper we prove a comparison result for weak solutions to linear elliptic problems of the type −(aij(x)uxi)xj=f(x)ϕ(x) in Ω, u=0 on ∂Ω, where Ω is an open set of Rn (n&ges;2), ϕ(x)=(2π)−n/2exp(−&z.sfnc;x&z.sfnc;2/2), aij(x) are measurable functions such that aij(x)ξiξj&ges;ϕ(x)&z.sfnc;ξ&z.sfnc;2 a.e. x∈Ω, ξ∈Rn and f(x) is a measurable function taken in order to guarantee the existence of a solution u∈H10(ϕ,Ω) of (1.1). We use the notion of rearrangement related to Gauss measure to compare u(x) with the solution of a problem of the same type, whose data are defined in a half-space and depend only on one variable. To cite this article: M.F. Betta et al., C. R. Acad. Sci. Paris, Ser. I 334 (2002) 451–456. [Copyright &y& Elsevier]

Published
2002
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