Symplectic Quantization for Reducible Systems

We study an extension of the symplectic formalism in order to quantize reducible systems. We show that a procedure like {\it ghost-of-ghost} of the BFV method can be applied in terms of Lagrange multipliers. We use the developed formalism to quantize the antisymmetric Abelian gauge fields.Comment: 12 pages, IF-UFRJ-22/9

The effect of different regulators in the non-local field-antifield quantization

Recently it was shown how to regularize the Batalin-Vilkovisky (BV) field-antifield formalism of quantization of gauge theories with the non-local regularization (NLR) method. The objective of this work is to make an analysis of the behaviour of this NLR formalism, connected to the BV framework, using two different regulators: a simple second order differential regulator and a Fujikawa-like regulator. This analysis has been made in the light of the well known fact that different regulators can generate different expressions for anomalies that are related by a local couterterm, or that are equivalent after a reparametrization. This has been done by computing precisely the anomaly of the chiral Schwinger model.Comment: 9 pages, Revtex. To appear in Int. J. Mod. Phys.

Effective Actions for 0+1 Dimensional Scalar QED and its SUSY Generalization at T≠0T\neq 0

We compute the effective actions for the 0+1 dimensional scalar field interacting with an Abelian gauge background, as well as for its supersymmetric generalization at finite temperature.Comment: 5 pages, Latex fil

Exact Wavefunctions for a Delta Function Bose Gas with Higher Derivatives

A quantum mechanical system describing bosons in one space dimension with a kinetic energy of arbitrary order in derivatives and a delta function interaction is studied. Exact wavefunctions for an arbitrary number of particles and order of derivative are constructed. Also, equations determining the spectrum of eigenvalues are found

Phocidae species in Azores archipelago

List of Phocidae species recorded in Azores archipelago (Portugal).FUNDING: Azores PO 2020 - ACORES-01-0145-FEDER-000072. This project was financed by FEDER in 85% and by Azorean Public funds by 15% through Operational Program Azores 2020. This work is also funded by FEDER funds through the COMPETE 2020 Programme and National Funds through FCT - Portuguese Foundation for Science and Technology under the Research Infrastructure PORBIOTA - Portuguese E-Infrastructure for Information and Research on Biodiversity, project number POCI-01-0145-FEDER-022127.info:eu-repo/semantics/publishedVersio

Occurrences of pinnipeds (Carnivora, Phocidae) in the Azores archipelago (Portugal)

An inventory of historical and actual occurrences of pinnipeds in the Azores archipelago. The data used come from Silva et al. (2009) and from RACA - Rede de Arrojamentos de Cetáceos dos Açores (RACA-DRAM-RAA).FUNDING: Azores PO 2020 - ACORES-01-0145-FEDER-000072. This project was financed by FEDER in 85% and by Azorean Public funds by 15% through Operational Program Azores 2020. This work is also funded by FEDER funds through the COMPETE 2020 Programme and National Funds through FCT - Portuguese Foundation for Science and Technology under the Research Infrastructure PORBIOTA - Portuguese E-Infrastructure for Information and Research on Biodiversity, project number POCI-01-0145-FEDER-022127.info:eu-repo/semantics/publishedVersio

Occurrences of Sea turtles in Azores Archipelago

Sea turtles are the best-known and more widespread marine reptiles. However, information on their distribution and the occurrence of most species, except for nesting beaches, remains scarce and sporadic, depending on sightings from fishing vessels, tourist activities and occurrences in coastal areas as well as fishing bycatch. Since the last updated species’ list for the Azores (Santos et al, 2010), no new species’ record was known for Azorean waters, until October 2020, with the confirmed sighting of an Olive Ridley, Lepidochelys olivacea (Eschscholtz, 1829) (Barcelos et al. 2021). After that, in February 2021, a second individual was found stranded on Pico Island, already in an advanced state of decomposition. This increased the number of species present in Azores EEZ (Exclusive Economic Zone) to six out of the seven extant worldwide. The remaining one, Natator depressus (Garman, 1880), is native to the Indo-pacific (see Red List Standards & Petitions Subcommittee, 1996).FUNDING: AZORESBIOPORTAL – PORBIOTA (Azores PO 2020 - ACORES-01-0145-FEDER-000072) TOTAL BUDGET: 299. 901,83€ EU Support: 254. 916, 56€ This project was financed by FEDER in 85% and by Azorean Public funds by 15% through Operational Program Azores 2020. This work is also funded by FEDER funds through the COMPETE 2020 Programme and National Funds through FCT - Portuguese Foundation for Science and Technology under the Research Infrastructure PORBIOTA - Portuguese E-Infrastructure for Information and Research on Biodiversity, project number POCI-01-0145-FEDER-022127. For the period 2022-2023- Portal da Biodiversidade dos Açores (2022-2023) - PO Azores Project - M1.1.A/INFRAEST CIENT/001/2022.info:eu-repo/semantics/publishedVersio

Pinniped (Carnivora, Phocidae) occurrences in the Azores Archipelago (NE Atlantic)

BACKGROUND: The last Pinniped species update was in 2010, as part of the list of the terrestrial and marine biota from the Azores. This list includes a chapter dedicated to marine mammals, based on previously published bibliography. NEW INFORMATION: No new species were added since that list was published. However, there were new occurrences since the last update.Funding Institutions: AZORESBIOPORTAL – PORBIOTA (Azores PO 2020 - ACORES-01-0145-FEDER-000072) TOTAL BUDGET: €299,901.83 EU Support: €254, 916.56. This project was financed by FEDER in 85% and by Azorean Public funds by 15% through the Operational Programme Azores 2020. This work is also funded by FEDER funds through the COMPETE 2020 Programme and National Funds through FCT - Portuguese Foundation for Science and Technology under the Research Infrastructure PORBIOTA - Portuguese E-Infrastructure for Information and Research on Biodiversity, project number POCI-01-0145-FEDER-022127. For the period 2022-2023- Portal da Biodiversidade dos Açores (2022-2023) - PO Azores Project - M1.1.A/INFRAEST CIENT/001/2022. Open access will be supported by the project FCT-UIDB/00329/2020-2024 (Thematic Line 1 – integrated ecological assessment of environmental change on biodiversity).info:eu-repo/semantics/publishedVersio

A model for time-dependent cosmological constant and its consistency with the present Friedmann universe

We use a model where the cosmological term can be related to the chiral gauge anomaly of a possible quantum scenario of the initial evolution of the universe. We show that this term is compatible with the Friedmann behavior of the present universe.Comment: 5 pages, Revtex 4, twocolumn (minor corrections and improved reference list. To appear in Classical and Quantum Gravity

Clinical indicators of occult musculoskeletal pain in aggressive dogs

AGGRESSIVE behaviour by dogs is the most frequent behaviour problem reported to veterinary behaviour clinics (Bamberger and Houpt 2006, Fatjo and others 2007). The behaviour is a serious problem for the victims (Weiss and others 1998) and for the animals themselves, since it often reflects a negative underlying emotional state, especially if associated with pain (Bamberger and Houpt 2006, Hsu and Sun 2010). Pain may lower the dog’s general threshold for aggressive behaviour, while also encouraging specific aggressive displays as part of a protective/defensive response (Rutherford 2002, Muir and others 2004, Landsberg and others 2013). Beaver (1983) has suggested that more than a quarter (28.2 per cent) of dogs exhibiting aggression do so because of a medical condition, including pain, but pain-related aggression has been considered to account for only a small per cent of the total caseload in behaviour clinics, that is, 2–3.3 per cent (Beaver 1983, Borchelt 1983). However, when pain is identi- fied, the data from Beaver (1983) suggest the prognosis is excellent, with all cases in her case review reported to have a successful treatment outcome. A recent small case series of aggressive dogs with a pain focus indicated that musculoskeletal pain from hip dysplasia and osteoarthritis of the elbow was the main cause of pain, occurring in 75 per cent (nine of 12 cases) of these cases (Camps and others 2012)