Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Vasile Staicu"'
Autor:
Vasile Staicu, Ioan Calinescu, Mircea Vinatoru, Daniela Ghimpeteanu, Ioana Popa, Timothy J. Mason
Publikováno v:
Agronomy, Vol 14, Iss 3, p 416 (2024)
The move towards environmentally friendly processing has been a driving force for research into green methods for the extraction of bioactive compounds from plant materials. In this study, a green and efficient process for the extraction of β-carote
Externí odkaz:
https://doaj.org/article/a3c184e03ed64d898eed3a75b0ea5e71
Publikováno v:
Electronic Journal of Differential Equations, Vol 2019, Iss 75,, Pp 1-16 (2019)
In this article, we study a pseudo-differential inclusion driven by a nonlocal anisotropic operator and a Clarke generalized subdifferential of a nonsmooth potential, which satisfies nonresonance conditions both at the origin and at infinity. We p
Externí odkaz:
https://doaj.org/article/7ca24768d3b54917a0a8d16dea03f72d
Publikováno v:
Electronic Journal of Differential Equations, Vol 2015, Iss 103,, Pp 1-18 (2015)
We consider a nonlinear periodic problem driven by a nonhomogeneous differential operator plus an indefinite potential and a reaction having the competing effects of concave and convex terms. For the superlinear (concave) term we do not employ the
Externí odkaz:
https://doaj.org/article/535263b345384c1c87da213162bde2b0
Autor:
Sergiu Aizicovici, Vasile Staicu
Publikováno v:
Electronic Journal of Differential Equations, Vol 2006, Iss 01, Pp 1-11 (2006)
We consider a nonlinear Volterra integral equation governed by an m-accretive operator and a multivalued perturbation in a separable Banach. The existence of a continuous selection for the corresponding solution map is proved. The case when the m-acc
Externí odkaz:
https://doaj.org/article/fe960eab56be4ff1b21db2265dcaddd4
Publikováno v:
Journal of Biomedical Research & Environmental Sciences. 4:660-664
Vegetable biomass consumes a small part of the solar energy, about 1%, but enough to cover the energy needs of mankind and maintain the life of the entire planet [1]. Vegetable biomass is generators of minerals, chemical compounds, materials and fibr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84de764b75917b5d54a5f0c9fd41d4b3
https://doi.org/10.37871/jbres1723
https://doi.org/10.37871/jbres1723
Publikováno v:
Set-Valued and Variational Analysis. 30:207-231
In this paper we establish a multiplicity result for a class of unilateral, nonlinear, nonlocal problems with nonsmooth potential (variational-hemivariational inequalities), using the degree map of multivalued perturbations of fractional nonlinear op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a9ef7b5030f11cc6f6b14118032338d
https://doi.org/10.1007/s11228-020-00562-0
https://doi.org/10.1007/s11228-020-00562-0
Publikováno v:
Advances in Nonlinear Analysis, Vol 11, Iss 1, Pp 672-683 (2021)
We consider quasilinear elliptic systems in divergence form. In general, we cannot expect that weak solutions are locally bounded because of De Giorgi’s counterexample. Here we assume that off-diagonal coefficients have a “butterfly support”: t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbc85b17a47aaf1e68de0a6b6c9e82b1
http://hdl.handle.net/10773/35311
http://hdl.handle.net/10773/35311
Autor:
Georgiana Cernica, Cristina Ileana Covaliu, Gina-Alina Catrina (Traistaru), Lidia Kim, Mariana Popescu, Vasile Staicu
Publikováno v:
Sustainability
Volume 13
Issue 3
Sustainability, Vol 13, Iss 1441, p 1441 (2021)
Volume 13
Issue 3
Sustainability, Vol 13, Iss 1441, p 1441 (2021)
The purpose of this study was to produce additional data for the valorization process of vegetable waste originating from dietary supplement technology. Two types of vegetable waste originating from different technological processes of sea buckthorn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::829219a300423119a35d0a65bd57e885
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
We give maximum principles for solutions u : Ω → R N to a class of quasilinear elliptic systems whose prototype is − ∑ i = 1 n ∂ ∂ x i ∑ β = 1 N ∑ j = 1 n a i , j α , β x , u ( x ) ∂ u β ∂ x j ( x ) = 0 , x ∈ Ω , where α
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9e6f05dc818c4c91bdfdfeb3d96ef00
http://hdl.handle.net/11697/130585
http://hdl.handle.net/11697/130585
Autor:
Alberto Bressan, Vasile Staicu
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The paper is concerned with the optimal harvesting of a marine resource, described by an elliptic equation with Neumann boundary conditions and a nonlinear source term. We first consider a single agent, whose harvesting effort at various locations is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e328ff14fb4c072294b5feefd46bbbad
http://hdl.handle.net/10773/27176
http://hdl.handle.net/10773/27176