Results 91 to 100 of about 2,559,065 (169)

Bioecologia e controle de Spodoptera frugiperda em milho. [PDF]

open access: yes, 2012
bitstream/item/67387/1/Documento-344 ...
BARCELOS, H. T., ROSA, A. P. S. A. da
core  

Recognizing dualizing complexes [PDF]

open access: yesarXiv, 2003
Let A be a noetherian local commutative ring and let M be a suitable complex of A-modules. This paper proves that M is a dualizing complex for A if and only if the trivial extension A \ltimes M is a Gorenstein Differential Graded Algebra. As a corollary follows that A has a dualizing complex if and only if it is a quotient of a Gorenstein local ...
arxiv  

Smarandache semirings, semifields and semivector spaces [PDF]

open access: yesPublished by the American Research Press, 2002, 2003
Generally, in any human field, a Smarandache Structure on a set A means a weak structure W on A such that there exists a proper subset B which is embedded with a stronger structure S. By proper subset one understands a set included in A, different from the empty set, from the unit element if any, and from A. These types of structures occur in our every
arxiv  

Smarandache Near-rings [PDF]

open access: yesPublished by the American Research Press, Rehoboth, NM, USA, 2002, 2003
Generally, in any human field, a Smarandache Structure on a set A means a weak structure W on A such that there exists a proper subset B contained in A which is embedded with a stronger structure S. These types of structures occur in our everyday's life, that's why we study them in this book. Thus, as a particular case: A Near-ring is a non-empty
arxiv  

Biotecnologia de produção massal e manejo de Trichogramma para o controle biológico de pragas. [PDF]

open access: yes, 2014
Uso de Trichogramma no Brasil e no mundo; Biotecnologia de producao massal de Trichogramma; Uso de Trichogramma em programas de manejo integrado de pragas - MIP; Controle de qualidade na producao e manejo de Trichogramma; Impacto ambiental dos ...
ALMEIDA, R. P. de   +2 more
core  

Maximal ideal space of a commutative coefficient algebra [PDF]

open access: yesarXiv, 2003
The basic notion of the article is a pair (A,U), where A is a commutative C*-algebra and U is a partial isometry such that mapping U()U* is an endomorphism of A and U*U belongs to A. We give a description of the maximal ideal space of the smallest coefficient C*-algebra of the algebra C*(A,U) generated by the system (A,U).
arxiv  

Selection of the fall armyworm Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) for survival on Cry 1A (b) Bt toxin. [PDF]

open access: yes, 2015
Plantas transgênicas que expressam toxinas da bactéria Bacillus thuringiensis (Bt) representam um importante avanço para o controle de lepidópteros-pragas de milho.
FOSTER, J. E.   +4 more
core  

Plantas inseticidas: interações e compostos

open access: yesPesquisa Agropecuária Gaúcha, 2004
Para sobreviver, durante sua evolução, as plantas desenvolveram mecanismos de resposta às pragas e doenças. Adaptação e resistência traduzem-se por alterações no metabolismo da célula vegetal, entre elas a síntese de proteínas de defesa, expressas por ...
Marinez Saiote Tagliari   +2 more
doaj  

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