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1. Una o trina? Le epistole di Raimbaut de Vaqueiras al marchese Bonifacio

Author

Giuseppe Tavani

Subjects
Old Occitan, Troubadour Lyric, Raimbaut de Vaqueiras, Romanic languages, PC1-5498
Abstract

This article intends to reopen the debate about the structure of Raimbaut de Vaqueiras’ epistles to Marques Boniface I, in order to establish whether they are actually three autonomous texts concerning the poet’s friendship with his patron, composed at different times, or whether the text was composed at one specific time in the Orient. The first hypothesis, put forward by Schulz-Gora, would appear to be confirmed by the fact that each text refers to events that occurred at different times and in different places. The second hypothesis, supported by Crescini, claims that the tradition of a single poem in antichronological order as found in the manuscripts is the correct structure and that the poem was composed at Thessalonica or Constantinople in the spring of 1205. This paper will reconsider Schulz-Gora’s interpretation and argue that the theory of a single text is inadequate because it does not give proper consideration to the different setting of each text, nor to the difficulty of placing their composition just before the disastrous defeat at Adrianopoli.

Published
2017

2. Inserti abusivi e attribuzioni indifendibili. Spigolando tra gli unica del canzoniere provenzale Sg

Author

Giuseppe Tavani

Subjects
Troubadours, Old Occitan, Interpretation, Romanic languages, PC1-5498
Abstract

The central section of the Occitan songbook kept at the Biblioteca de Catalunya (ms. 146), generally known as Sg since it originally came from Saragossa (from Gil y Gil’s library), continues to prove to be of great interest for the study of the reception of troubadour poetry in Catalan milieux, at a time when a new poetic tradition was taking shape, influenced by the Toulouse tradition of the Consistori de la Gaia Sciensa. These particular circles and period naturally influenced the selection of authors and texts – with the resulting inclusions and exclusions – as well as the accompanying attributions. The latter may in part be due to a tradition that was already corrupt, but also, especially as far as the unica are concerned, to a form of mimetic parasitism, accompanied by a tendency for illicit inclusions in the case of some particular texts for which, as in previous articles, I have tried to point out the degree of ‘impertinence’ and to decide whether to add them to the list of suspects, to place them under interrogation, or – in the most clearly arbitrary cases – to simply remove them. This paper will focus on a planh attributed to Raimbaut de Vaqueiras (394,4a), which Sg shares with Ve-Ag, and on three unica which Sg alone attributes to Giraut de Borneil (242,18a; 52a; 69a).

Published
2015

3. Viabilidad económica de la producción de carpa Nishikigoi (Cyprinus carpio L.) para el mercado de peces ornamentales para mascotas en Brasil

Author

Machado, Bianca K. V., Trombeta, Thiago Dias, Camargo, Tavani R., Petersen, Marcelo G., Assano, Marcelo, Brande, Maicon R., and Bueno, Guilherme Wolff

Subjects
Aquicultura, Economic indicators, Bioeconomia, Aquariofilia, Acuicultura, Indicadores económicos, Acuariofilia, Aquaculture, Bioeconomy, Bioeconomía, Aquariophilia, Indicadores econômicos
Abstract

The commercialization of ornamental aquatic organisms stands out among the various segments of the Pet market in Brazil. Among the various species used for aquarium hobby, the colored carp, known as Koi or Nishikigoi (Cyprinus Carpio L.), represent the main species commercialized in the country. In this context, the present study carried out a projection of the economic viability of Nishikigoi carp production in a fish farm in the metropolitan region of São Paulo that sells animals to the Brazilian Pet market for ornamental fish. Three hectares of water depth were evaluated during ten production cycles per year. In this period, the total production costs (TC) and effective operating costs (EOC) and total operating costs (TOC) were obtained, plus fixed costs for the operation of this agribusiness. Economic indicators were applied to assess the feasibility of investing in the business through the internal rate of return (IRR), net present value (NPV), payback period (PRC) and cost-benefit ratio of the investment (RCB). The initial investment projection was 2.3 million reais. The most expressive economic viability indicators were obtained by the IRR of 10.41% per year and NPV of approximately 1.6 million reais, considering the net cash flow for the period of ten years. The payback period on invested capital can be reached in 7.15 years with an RCB of 1.68 reais. In this way, the scenario studied demonstrates the feasibility of investing in this agribusiness being a promising venture in the aquaculture sector. La comercialización de organismos acuáticos ornamentales se destaca entre los diversos segmentos del mercado de Mascotas en Brasil. Entre las diversas especies utilizadas para la acuariofilia, las carpas coloradas, conocidas como Koi o Nishikigoi (Cyprinus Carpio L.), representan la principal especie comercializada en el país. Este estudio realizó una proyección de la viabilidad económica de la producción de carpa Nishikigoi en una piscifactoría de la región metropolitana de São Paulo que vende animales al mercado brasileño Pet para peces ornamentales. Se evaluaron tres hectáreas de lámina de agua durante diez ciclos de producción por año. En este período se obtuvieron los costos totales de producción (TC) y los costos efectivos de operación (COE) y los costos totales de operación (TOC), más los costos fijos para la operación de esta agroindustria. Se aplicaron indicadores económicos para evaluar la factibilidad de invertir en el negocio a través de la tasa interna de retorno (TIR), valor presente neto (VPN), periodo de recuperación (PRC) y relación costo-beneficio de la inversión (RCB). La proyección de inversión inicial era de 2,3 millones de reales. Los indicadores de viabilidad económica más expresivos fueron obtenidos por la TIR de 10,41% anual y VPN de aproximadamente 1,6 millones de reales, considerando el flujo de caja neto para el período de diez años. El período de recuperación del capital invertido se puede alcanzar en 7,15 años con un RCB de 1,68 reales, un escenario que demuestra la viabilidad de invertir en este agronegocio en el sector de la acuicultura. A comercialização de organismos aquáticos ornamentais se destaca entre os vários segmentos do mercado Pet no Brasil. Dentre as diversas espécies utilizadas para a aquariofilia, as carpas coloridas, conhecidas como Koi ou Nishikigoi (Cyprinus Carpio L.), representam a principal espécie comercializada no país. Neste contexto, o presente estudo realizou a análise da viabilidade econômica da produção de carpa Nishikigoi em uma piscicultura comercial instalada na região metropolitana de São Paulo que comercializa animais para o mercado Pet brasileiro de peixes ornamentais. Avaliaram-se três hectares de lâmina de água durante dez ciclos de produção por ano. Neste período, foram obtidos os custos totais de produção (CT) e os custos operacionais efetivos (COE) e custos operacionais totais (COT), acrescidos dos custos fixos para operacionalização deste agronegócio. Indicadores econômicos foram aplicados para avaliar a viabilidade de investimento no negócio por meio da taxa interna de retorno (TIR), valor presente líquido (VPL), período de retorno do capital (PRC) e relação custo-benefício do investimento (RCB). A projeção de investimento inicial foi de ̴2.3 milhões de reais. Os indicadores econômicos de viabilidade mais expressivos foram obtidos pelo TIR de 10.41% ao ano e VPL de aproximadamente 1.6 milhões de reais, considerando o fluxo líquido de caixa para o período de dez anos. O período de retorno do capital investido poderá ser alcançado em 7.15 anos com um RBC em 1.68 reais. Dessa maneira, o cenário estudado demostrou a viabilidade de investir neste agronegócio sendo um empreendimento promissor do setor da aquicultura.

Published
2022

4. Peire de Blai, 'En est son fas chansoneta novelha' (BdT 328.1)

Author

Giuseppe Tavani

Subjects
Peire de Blai, Troubadours, Old Occitan, Textual criticism, Interpretation, Romanic languages, PC1-5498
Abstract

This particular text, defined by its author as a “chansoneta novelha”, is attributed by C to Uc Brunenc and by M to Peire de Blai (Peire de Brau in CReg). It is no masterpiece, but within the troubadour corpus figures as an interesting example, from the viewpoint of technique, of an unusual and complex enlacement of riche rhymes. At the same time it is a unique example of an almost perfect application of the rules of ‘capfinitio’, used here as a linking of verses and stanzas (‘capfinitio per bordos’ and ‘per coblas’). For a long time the poem received no critical attention, then a few years ago it was edited twice almost simultaneously: once by the present author and again by Paolo Gresti, who quite rightly rejected the attribution to Uc Brunenc. This article will offer a new edition of the text based on both manuscripts, but also closely following the structural principles intended by the poet (who most certainly is the Peire de Blai indicated by M). Furthermore, it will examine the questions raised by the chansoneta’s particular position in M, with a view of providing a ‘material’ reassessment of the chansonnier and of describing the possible circumstances in which it was compiled, the period in which it was assembled and then recopied – by a single hand – at a later date than is generally believed.

Published
2010

5. Raimbaut de Vaqueiras (?), 'Altas undas que venez suz la mar' (BdT 392.5a)

Author

Giuseppe Tavani

Subjects
Raimbaut de Vaqueiras, Troubadours, Old Occitan, Textual criticism, Interpretation, Romanic languages, PC1-5498
Abstract

The article proposes a new authorship for Altas undas que venez suz la mar, a poem attributed by ms. Sg to Raimbaut de Vaqueiras. This authorship has long been debated by scholars. Altas undas is almost without a doubt a specimen of cantiga de amigo, a Galician-Portuguese lyric genre which flourished in the 13th century, slightly after Raimbaut’s death. This leads to some crucial problems. Is Raimbaut the inventor of this genre? Did he imitate a Galician-Portuguese model? If so, did Galician-Portuguese lyric begin earlier than is generally acknowledged? Did Raimbaut draw inspiration from another extravagant lyric genre, the French chanson de toile, to compose Altas undas? The critical history of the poem is summarized by Tavani, who concludes that Altas undas may be attributed to Cerveri de Girona, a 13th century Catalan troubadour.

Published
2008

7. Adsorption of sulphuric acid on smectite from acidic aqueous solutions Adsorção de ácido sulfúrico em esmectita de soluções aquosas ácidas

Author

E. L. Tavani and C. Volzone

Subjects
adsorção, ácido sulfúrico, esmectita, revestimento de argila, adsorption, sulfuric acid, smectite, clay liner, Engineering (General). Civil engineering (General), TA1-2040
Abstract

The adsorption of sulphuric acid on smectite from acidic aqueous solutions was studied. The amounts of cations dissolved in each equilibrium solution were determined by chemical analysis. Simultaneously, the original smectite and the smectite after each test were characterized by infrared, X-ray diffraction and swelling index. The results obtained permitted us to determine that the substitutions of the exchange cations and the chemical attack occurred at very different acid concentrations and treatment times. It was established that during the acid treatment of the smectite, a progressive damage of its crystalline structure was produced. Finally, the influences of the substitution of exchange cations and of the chemical attack in the swelling index were determined.A adsorção de ácido sulfúrico em esmectita de soluções aquosas ácidas é estudada. As concentrações de cátions dissolvidos em cada solução em equilíbrio foram determinadas por análise química. As esmectitas original e após cada teste foram simultaneamente caracterizadas por infravermelho, difração de raios X e índice de crescimento. Os resultados obtidos permitiram determinar que as substituições dos cátions de troca e o ataque químico ocorreram em diferentes concentrações de ácido e tempos de tratamento. Foi verificado que durante o tratamento em ácido da esmectita foi produzido um dano progressivo da sua estrutura cristalina. Finalmente foram determinadas as influências da substituição dos cátions de troca e do ataque químico no índice de crescimento.

Published
1999
Full Text
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8. Bioprospecting of antioxidant compounds in the bycatch

Author

Camargo, Tavani Rocha [UNESP], Universidade Estadual Paulista (Unesp), and Valenti, Wagner Cotroni [UNESP]

Subjects
Pesca de arrasto, Bycatch, Sustentabilidade, Hidrolisados proteicos
Abstract

Submitted by Tavani Rocha Camargo (tavanirocha@hotmail.com) on 2020-06-04T17:38:25Z No. of bitstreams: 1 Tese final.pdf: 4064718 bytes, checksum: 39cbe8f9e46017af0dbff6b6e08890cd (MD5) Submitted by Tavani Rocha Camargo (tavanirocha@hotmail.com) on 2020-06-04T17:38:25Z No. of bitstreams: 1 Tese final.pdf: 4064718 bytes, checksum: 39cbe8f9e46017af0dbff6b6e08890cd (MD5) Submitted by Tavani Rocha Camargo (tavanirocha@hotmail.com) on 2020-06-04T17:38:25Z No. of bitstreams: 1 Tese final.pdf: 4064718 bytes, checksum: 39cbe8f9e46017af0dbff6b6e08890cd (MD5) Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Submitted by Tavani Rocha Camargo (tavanirocha@hotmail.com) on 2020-06-04T17:38:25Z No. of bitstreams: 1 Tese final.pdf: 4064718 bytes, checksum: 39cbe8f9e46017af0dbff6b6e08890cd (MD5) Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Submitted by Tavani Rocha Camargo (tavanirocha@hotmail.com) on 2020-06-04T17:38:25Z No. of bitstreams: 1 Tese final.pdf: 4064718 bytes, checksum: 39cbe8f9e46017af0dbff6b6e08890cd (MD5) Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Submitted by Tavani Rocha Camargo (tavanirocha@hotmail.com) on 2020-06-04T17:38:25Z No. of bitstreams: 1 Tese final.pdf: 4064718 bytes, checksum: 39cbe8f9e46017af0dbff6b6e08890cd (MD5) Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Submitted by Tavani Rocha Camargo (tavanirocha@hotmail.com) on 2020-06-04T17:38:25Z No. of bitstreams: 1 Tese final.pdf: 4064718 bytes, checksum: 39cbe8f9e46017af0dbff6b6e08890cd (MD5) Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Submitted by Tavani Rocha Camargo (tavanirocha@hotmail.com) on 2020-06-04T17:38:25Z No. of bitstreams: 1 Tese final.pdf: 4064718 bytes, checksum: 39cbe8f9e46017af0dbff6b6e08890cd (MD5) Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Approved for entry into archive by Laudicélia Martins Arantes (lm.arantes@unesp.br) on 2020-06-05T12:57:07Z (GMT) No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Made available in DSpace on 2020-06-05T12:57:07Z (GMT). No. of bitstreams: 1 camargo_tr_dr_jabo_par.pdf: 995732 bytes, checksum: 7bef4f49c4db78dda1e447bd7f937e82 (MD5) Previous issue date: 2020-02-14 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Nos últimos anos, a fauna acompanhante da pesca camaroeira vem sendo alvo de estudos por ser um dos fatores do grande impacto ambiental causado pela pesca de arrasto. Em contrapartida, esse rejeito de pesca pode ter propriedades funcionais e bioativas, como peptídeos antioxidantes, que poderiam agregar valor a esse rejeito e se tornar um produto de interesse para as indústrias alimentícias. Assim, o presente estudo visou investigar a atividade antioxidante dos hidrolisados proteicos obtidos dos animais mais abundantes da fauna acompanhante e microencapsular esses hidrolisados para agregar valor à este material normalmente descartado. Os resultados demonstram que a hidrólise enzimática, utilizando as enzimas comerciais Alcalase 2.4 L® e Protamex®, é um método eficiente para liberar peptídeos de interesse econômico nas duas espécies mais abundantes de peixes (Micropogonias furnieri e Paralonchurus brasilensis) e nas duas mais abundantes de crustáceos (Callinectes ornatus e Hepatus pudibundus). A hidrólise liberou peptídeos com atividade antioxidante em todas as amostras analisadas, submetidas às duas enzimas testadas. A coacervação complexa e subsequente microencapsulação por spray-drying mostrou-se eficiente para proteger a atividade antioxidante desses hidrolisados proteicos. Assim, os resultados fornecem evidências para o potencial uso dos hidrolisados das espécies analisadas como ingrediente funcional ou nutracêutico na indústria alimentícia. In recent years, the bycatch of shrimp fishing has been the subject of studies as it is one of the factors of the great environmental impact caused by trawling. However, this bycatch can have functional and bioactive properties, such as antioxidant peptides, which could add value to this reject and become a product of interest to the food industries. Thus, the present study aimed to investigate the antioxidant activity of protein hydrolysates obtained from the most abundant animals of the bycatch and to microencapsulate these hydrolysates to add value to this normally discarded material. The results demonstrate that enzymatic hydrolysis, using the commercial enzymes Alcalase 2.4 L® and Protamex®, is an efficient method to release peptides of economic interest in the two most abundant species of fish (Micropogonias furnieri and Paralonchurus brasilensis) and in the two most abundant crustaceans (Callinectes ornatus and Hepatus pudibundus). Hydrolysis released peptides with antioxidant activity in all samples analyzed, submitted to the two enzymes tested. Complex coacervation and subsequent microencapsulation by spray-drying proved to be efficient to protect the antioxidant activity of these protein hydrolysates. Thus, the results provide evidence for the potential use of hydrolysates of the analyzed species as a functional or nutraceutical ingredient in the food industry. 2016/11182-0 2018/18995-2

Published
2020

11. CAPM usando uma carteira sintética do PIB Brasileiro

Author

José Fajardo, Leonardo C. di Tavani, and Eurilton Araújo

Subjects
Measure (data warehouse), lcsh:HB71-74, Market portfolio, Financial economics, PIB, lcsh:Economics as a science, carteira sintética, synthetic portfolio, GDP, Economics as a science, Empirical research, Stock exchange, CAPM, Economics, Dividend, Portfolio, Capital asset pricing model, Proxy (statistics), HB71-74, General Economics, Econometrics and Finance
Abstract

Uma grande dificuldade de testar o CAPM, como apontado na crítica de Roll, é selecionar uma "proxy" adequada para carteira de mercado. A literatura recente tem buscado alternativas para a construção de uma carteira de mercado, as quais procuram incorporar os efeitos de ativos não transacionados em bolsa, como o capital humano. Este trabalho segue a metodologia proposta por Hou (2002) e se dedica a cons-truir uma carteira de mercado hipotética que paga o PIB como dividendo. O objetivo do artigo é avaliar se esta carteira alternativa constitui uma ampla e legítima "proxy" para a carteira de mercado, testando sua eficiência no sentido média-variância e sua capacidade de explicar o retorno de carteiras de ativos, no contexto do CAPM. Adicionalmente, compara-se o desempenho desta medida alternativa ao obtido pelo retorno do Ibovespa. Os resultados obtidos, especialmente os referentes à versão Black, mostram que a carteira sintética não é eficiente. O retorno do Ibovespa, apesar de não satisfazer as condições de validade do CAPM e de eficiência em alguns subperíodos estudados, foi eficiente em muitos deles e também na amostra inteira (1991-2002), sendo, portanto, uma medida mais razoável para a carteira de mercado do que a alternativa proposta por Hou (2002). One of the difficulties in testing the CAPM, as highlighted in the Roll's critique, is how to select a suitable market proxy. The literature has proposed a number of alternatives to the use of Stock Exchange Indices as a proxy for the Market Portfolio. All of them looked at a broader measure of assets which are not sold at Stock Exchanges. This paper follows Hou (2002) by testing the CAPM through a hypothetical aggregate portfolio that generates GDP as its dividend. The goal of the paper is to evaluate if the proxy proposed by Hou (2002) can be used as a good proxy for the market portfolio in Brazil. In addition, we compare the performance of the synthetic return proposed by Hou (2002) to the Ibovespa return, a very popular proxy for the market portfolio in empirical studies in Brazil. Results, especially the ones related to the Black version of the CAPM, show that the synthetic return measure is not mean-variance efficient for the full sample (1991-2002). In spite of not being able to meet all the requirements imposed by the CAPM model in all sub-samples, the Ibovespa return has a better performance compared to the synthetic return. In fact, it is mean-variance efficient for the full sample and for the majority of sub-samples.

Published
2006

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