Improved BFT embedding having chain-structure

Chang-Young, Ee; Kim, Seung-Kook; Park, Young-Jai

doi:10.1016/j.physletb.2005.10.028

Cited by 3 publications

(4 citation statements)

References 32 publications

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“…Aquaculture has grown at a steady pace, reaching global expansion, with shrimp farming being one of the most successful and profitable activities (Ottinger, Clauss, & Kuenzer, 2016). The development of productive techniques such as the bioflocs and recirculation systems, which allow high storage densities, has leveraged and opened precedents for this scenario to be increasingly consolidated (Avnimelech & Ritvo, 2003;Crab, Avnimelech, Defoirdt, Bossier, & Verstraete, 2007;Dalsgaard et al, 2013;Kim, Ee, Kim, & Park, 2006;Vinatea et al, 2018;Wasielesky, Atwood, Stokes, & Browdy, 2006). Accompanying this trend has sought methods of working with alternatives that help in mitigating the challenges generated by increasing the capacity and enhancement of systems for the rearing of aquatic organisms, including higher stress and health problems (De Souza et al, 2016;Gaona, Paz Serra, Furtado, Poersch, & Wasielesky, 2016;Glencross et al, 2016;Panini et al, 2017;Macias-Sancho et al, 2017;Torrecilas et al, 2017;Wang, Wang, Zhang, & Song, 2017).…”

Section: Introductionmentioning

confidence: 99%

Inclusion of AmazonianMauritia flexuosafruit pulp as functional feed in the diet for the juvenile Pacific white shrimpLitopenaeus vannamei

et al. 2020

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This study investigated the effects of the inclusion of Mauritia flexuosa fruit pulp in the diet on the growth performance, economic benefit, muscle composition, total contents of carotenoids and flavonoids, chromaticity parameters, total antioxidant capacity, and lipid peroxidation in the hepatopancreas and muscle of the juvenile shrimp Litopenaeus vannamei (weighing 1.26 ± 0.023 g). Five diets (37% protein, 10% lipid) consisting of 0 (control), 1.25%, 2.50%, 5.00% and 10.00% (w/w) M. flexuosa fruit pulp were formulated and provided to the shrimps (n = 50 per tank, treatments in triplicate) for 31 days. Results showed that there were no significant differences between the treatments in terms of the growth capacity, chromaticity parameters, muscle composition and total flavonoid content of shrimps (p > .05). However, the carotenoid content in the muscle and hepatopancreas of the shrimps was significantly increased due to the dietary carotenoids present in M. flexuosa fruit pulp (p < .05). This increase in the carotenoid content directly favoured the increase in the antioxidant capacity in the hepatopancreas and muscle of the shrimps (R2 = 0.99 and R2 = 0.97 respectively; p < .05). There was also a direct relationship between the carotenoid content and the decrease in lipid peroxidation in the hepatopancreas (R2 = 0.90; p < .05). The feed cost kg−1 in terms of weight gain and protein production decreased with the inclusion of high levels of M. flexuosa fruit pulp, reaching 8.11% and 18.76% of cost reduction, respectively, with the addition of 5.00% of M. flexuosa fruit pulp. Therefore, the inclusion of M. flexuosa fruit pulp in the diets of shrimp can increase the carotenoid content and the antioxidant capacity in the hepatopancreas and muscle, reduce lipid peroxidation in the hepatopancreas, and probably provide economic benefits for the rearing of juvenile shrimps.

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Section: Introductionmentioning

confidence: 99%

Inclusion of AmazonianMauritia flexuosafruit pulp as functional feed in the diet for the juvenile Pacific white shrimpLitopenaeus vannamei

et al. 2020

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“…respectively, where the overdot denotes the time derivative. The usual Dirac approach [7] gives the following set of constraints [8]…”

Section: Schwinger Model In (1+1) Dimensionsmentioning

confidence: 99%

“…The aim of this manuscript is to apply recently modified Faddeev-Jackiw [6] formalism on two examples of physical interest. The first example is the Schwinger model in (1+1) dimensions which, despite the gauge anomaly, is unitary and it was consistently quantized [8]. The second example is a simpler mechanical system possessing one chain of a four level second-class constraints.…”

Section: Introductionmentioning

confidence: 99%

Symplectic algorithm for systems with second-class constraints

Defterli

Băleanu

2006

Czech J Phys

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“…Along the last decades, two main second-to-first-class system conversion lines have evolved in the literature, leading to different formalisms. The first one comes from pioneering works by Wess, Zumino, Faddeev and Shatashvili [36,37] in which extra variables are introduced in phase space in order to convert second-class constraints into first-class and has led to the systematic Batalin-Fradkin-Tyutin (BFT) approach [38,39] with corresponding subsequent modifications and improvements [40][41][42]. Since then, there have been countless applications of the BFT formalism.…”

mentioning

confidence: 99%

Note on an extended chiral bosons system contextualized in a modified gauge-unfixing formalism

Ambrósio,

Costa,

Alves

et al. 2024

EPL

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We analyze the Hamiltonian structure of an extended chiral bosons theory in which the self-dual constraint is introduced via a control α-parameter. The system has two second-class constraints in the non-critical regime and an additional one in the critical regime. We use a modified gauge-unfixing (GU) formalism to derive a first-class system, disclosing hidden symmetries. To this end, we choose one of the second-class constraints to build a corresponding gauge symmetry generator. The worked out procedure converts second-class variables into first-class ones allowing the lifting of gauge symmetry. Any function of these GU variables will also be invariant. We obtain the GU Hamiltonian and Lagrangian densities in a generalized context containing the Srivastava and Floreanini-Jackiw models as particular cases. Additionally, we observe that the resulting GU Lagrangian presents similarities to the Siegel invariant Lagrangian which is known to be suitable for describing chiral bosons theory with classical gauge invariance, however broken at quantum level. The final results signal a possible equivalence between our invariant Lagrangian obtained from the modified GU formalism and the Siegel invariant Lagrangian, with a distinct gauge symmetry.

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Improved BFT embedding having chain-structure

Cited by 3 publications

References 32 publications

Inclusion of AmazonianMauritia flexuosafruit pulp as functional feed in the diet for the juvenile Pacific white shrimpLitopenaeus vannamei

Inclusion of AmazonianMauritia flexuosafruit pulp as functional feed in the diet for the juvenile Pacific white shrimpLitopenaeus vannamei

Symplectic algorithm for systems with second-class constraints

Note on an extended chiral bosons system contextualized in a modified gauge-unfixing formalism

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