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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
18/07/2014 |
Data da última atualização: |
29/02/2016 |
Autoria: |
MELO, L. C. de; SANQUETTA, C. R.; DALLA CORTE, A. P.; HENTZ, A. M. K. |
Título: |
Estimativa de biomassa e carbono total para árvores de caixeta no Paraná. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Pesquisa Florestal Brasileira, Colombo, v. 34, n. 77, p. 21-30, jan./mar. 2014. |
Idioma: |
Português |
Conteúdo: |
O objetivo deste trabalho foi realizar o ajuste de modelos para estimar biomassa e carbono total de indivíduos de caixeta (Tabebuia cassinoides (Lam.) DC.), localizado em Guaratuba, litoral Paranaense, Brasil. Foram testados 13 modelos, e a escolha do melhor baseou-se nos indicadores estatísticos R2aj, Syx(%) e análise gráfica dos resíduos. Realizou-se ainda, como critério complementar de escolha, a avaliação das condicionantes de regressão dos resíduos dos melhores modelos. Não foram feitos ajustes de biomassa e carbono por compartimentos devido à baixa correlação entre as variáveis dependentes (biomassa e carbono) e independentes, diâmetro à altura do peito (dap) e altura total (h). Para a biomassa total, o modelo Y = ?0 + ?1*dap se mostrou superior aos demais, apresentando um R2aj de 0,96 e Syx(%) de 7,94. Para carbono, melhor ajuste foi obtido pelo modelo (Y = ?0 + ?1*dap + ?2*dap2 + ?3*dap3 + ?4*dap4, com valores de R2aj 0,97 e Syx (%) 8,09. Constatou-se a baixa variação dos resíduos para ambos os modelos. A variável altura total, utilizada de forma isolada, revelou-se inadequada para explicar as variáveis biomassa total e carbono total. |
Palavras-Chave: |
Atlantic Forest; Carbon fixation; Fixação de carbono; Mata Atlântica; Modelagem; Modeling. |
Thesagro: |
Tabebuia Cassinoides. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/122908/1/Estimativa.pdf
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Marc: |
LEADER 01905naa a2200241 a 4500 001 1990941 005 2016-02-29 008 2014 bl uuuu u00u1 u #d 100 1 $aMELO, L. C. de 245 $aEstimativa de biomassa e carbono total para árvores de caixeta no Paraná.$h[electronic resource] 260 $c2014 520 $aO objetivo deste trabalho foi realizar o ajuste de modelos para estimar biomassa e carbono total de indivíduos de caixeta (Tabebuia cassinoides (Lam.) DC.), localizado em Guaratuba, litoral Paranaense, Brasil. Foram testados 13 modelos, e a escolha do melhor baseou-se nos indicadores estatísticos R2aj, Syx(%) e análise gráfica dos resíduos. Realizou-se ainda, como critério complementar de escolha, a avaliação das condicionantes de regressão dos resíduos dos melhores modelos. Não foram feitos ajustes de biomassa e carbono por compartimentos devido à baixa correlação entre as variáveis dependentes (biomassa e carbono) e independentes, diâmetro à altura do peito (dap) e altura total (h). Para a biomassa total, o modelo Y = ?0 + ?1*dap se mostrou superior aos demais, apresentando um R2aj de 0,96 e Syx(%) de 7,94. Para carbono, melhor ajuste foi obtido pelo modelo (Y = ?0 + ?1*dap + ?2*dap2 + ?3*dap3 + ?4*dap4, com valores de R2aj 0,97 e Syx (%) 8,09. Constatou-se a baixa variação dos resíduos para ambos os modelos. A variável altura total, utilizada de forma isolada, revelou-se inadequada para explicar as variáveis biomassa total e carbono total. 650 $aTabebuia Cassinoides 653 $aAtlantic Forest 653 $aCarbon fixation 653 $aFixação de carbono 653 $aMata Atlântica 653 $aModelagem 653 $aModeling 700 1 $aSANQUETTA, C. R. 700 1 $aDALLA CORTE, A. P. 700 1 $aHENTZ, A. M. K. 773 $tPesquisa Florestal Brasileira, Colombo$gv. 34, n. 77, p. 21-30, jan./mar. 2014.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
Data corrente: |
13/12/2016 |
Data da última atualização: |
30/01/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
CAMPOS-JUNIOR, P. H. A.; ALVES, T. J. M.; DIAS, M. T.; ASSUNÇAO, C. M.; MUNK, M.; MATTOS, M. S.; KRAEMER, L. R.; ALMEIDA, B. G.; RUSSO, R. C.; BARCELOS, L.; CAMARGO, L. S. de A.; VIANA, J. H. M. |
Afiliação: |
PAULO HENRIQUE ALMEIDA CAMPOS-JUNIOR, UFSJ; THALYS JAIR MELO ALVES, UFSJ; MARCO TULIO DIAS, UFSJ; CAROLINA MARINHO ASSUNÇAO, UFJF; MICHELE MUNK, UFJF; MATHEUS SILVÉRIO MATTOS, UFMG; LUCAS ROCHA KRAEMER, UFMG; BRÍGIDA GOMES ALMEIDA, UFMG; REMO CASTRO RUSSO, UFMG; LUCÍOLA BARCELOS, UFMG; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; JOAO HENRIQUE MOREIRA VIANA, Cenargen. |
Título: |
Ovarian Grafts 10 days after Xenotransplantation: folliculogenesis and recovery of viable oocytes. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Plos One, v. 11, n. 6, e0158109, 2016. |
DOI: |
10.1371/journal. pone.0158109 |
Idioma: |
Inglês |
Conteúdo: |
Abstracts Ovarian xenotransplantation is a promising alternative to preserve fertility of oncologic patients. However, several functional aspects of this procedure remained to be addressed. The aim of this study was evaluate the feasibility of xenotransplantation as a strategy to maintain bovine ovarian grafts and produce oocytes. Adult ovarian cortical pieces were xenotransplanted to the dorsal subcutaneous of female NOD-SCID mice (n = 62). Grafts were recovered ten days after xenotransplantation. Host and graft weights; folliculogenesis progression; blood perfusion, relative gene expression and number of macrophage and neutrophil of xenografts; in vitro developmental competence of graft-derived oocytes were evaluated. Folliculogenesis was supported in the grafts, as indicated by the presence of primordial, primary, secondary, antral, and atretic follicles. The xenografts showed a greater volumetric density of atretic follicles and higher hyperemia and number of host-derived macrophage and neutrophil (P<0.05), when compared to non-grafted fragments. There was a higher blood perfusion under the back skin in the transplantation sites of host animals than in control and non-grafted (P<0.01). BAX and PRDX1 genes were up-regulated, while BCL2, FSHR, IGF1R and IGF2R were down-regulated, when compared to the control (P<0.01). Twenty seven oocytes were successfully harvested from grafts, and some of these oocytes were able to give rise to blastocysts after in vitro fertilization. However, cleavage and blastocyst rates of xenograft derived oocytes were lower than in control (P<0.01). Despite showing some functional modifications, the ovarian xenografts were able to support folliculogenesis and produce functional oocytes. MenosAbstracts Ovarian xenotransplantation is a promising alternative to preserve fertility of oncologic patients. However, several functional aspects of this procedure remained to be addressed. The aim of this study was evaluate the feasibility of xenotransplantation as a strategy to maintain bovine ovarian grafts and produce oocytes. Adult ovarian cortical pieces were xenotransplanted to the dorsal subcutaneous of female NOD-SCID mice (n = 62). Grafts were recovered ten days after xenotransplantation. Host and graft weights; folliculogenesis progression; blood perfusion, relative gene expression and number of macrophage and neutrophil of xenografts; in vitro developmental competence of graft-derived oocytes were evaluated. Folliculogenesis was supported in the grafts, as indicated by the presence of primordial, primary, secondary, antral, and atretic follicles. The xenografts showed a greater volumetric density of atretic follicles and higher hyperemia and number of host-derived macrophage and neutrophil (P<0.05), when compared to non-grafted fragments. There was a higher blood perfusion under the back skin in the transplantation sites of host animals than in control and non-grafted (P<0.01). BAX and PRDX1 genes were up-regulated, while BCL2, FSHR, IGF1R and IGF2R were down-regulated, when compared to the control (P<0.01). Twenty seven oocytes were successfully harvested from grafts, and some of these oocytes were able to give rise to blastocysts after in vitro fertilization. H... Mostrar Tudo |
Palavras-Chave: |
Bovine ovarian grafts; Ovarian xenografts. |
Thesaurus NAL: |
oocytes. |
Categoria do assunto: |
-- L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/154925/1/Cnpgl-2016-PlosOne-Ovarian.PDF
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Marc: |
LEADER 02628naa a2200301 a 4500 001 2062986 005 2023-01-30 008 2016 bl uuuu u00u1 u #d 024 7 $a10.1371/journal. pone.0158109$2DOI 100 1 $aCAMPOS-JUNIOR, P. H. A. 245 $aOvarian Grafts 10 days after Xenotransplantation$bfolliculogenesis and recovery of viable oocytes.$h[electronic resource] 260 $c2016 520 $aAbstracts Ovarian xenotransplantation is a promising alternative to preserve fertility of oncologic patients. However, several functional aspects of this procedure remained to be addressed. The aim of this study was evaluate the feasibility of xenotransplantation as a strategy to maintain bovine ovarian grafts and produce oocytes. Adult ovarian cortical pieces were xenotransplanted to the dorsal subcutaneous of female NOD-SCID mice (n = 62). Grafts were recovered ten days after xenotransplantation. Host and graft weights; folliculogenesis progression; blood perfusion, relative gene expression and number of macrophage and neutrophil of xenografts; in vitro developmental competence of graft-derived oocytes were evaluated. Folliculogenesis was supported in the grafts, as indicated by the presence of primordial, primary, secondary, antral, and atretic follicles. The xenografts showed a greater volumetric density of atretic follicles and higher hyperemia and number of host-derived macrophage and neutrophil (P<0.05), when compared to non-grafted fragments. There was a higher blood perfusion under the back skin in the transplantation sites of host animals than in control and non-grafted (P<0.01). BAX and PRDX1 genes were up-regulated, while BCL2, FSHR, IGF1R and IGF2R were down-regulated, when compared to the control (P<0.01). Twenty seven oocytes were successfully harvested from grafts, and some of these oocytes were able to give rise to blastocysts after in vitro fertilization. However, cleavage and blastocyst rates of xenograft derived oocytes were lower than in control (P<0.01). Despite showing some functional modifications, the ovarian xenografts were able to support folliculogenesis and produce functional oocytes. 650 $aoocytes 653 $aBovine ovarian grafts 653 $aOvarian xenografts 700 1 $aALVES, T. J. M. 700 1 $aDIAS, M. T. 700 1 $aASSUNÇAO, C. M. 700 1 $aMUNK, M. 700 1 $aMATTOS, M. S. 700 1 $aKRAEMER, L. R. 700 1 $aALMEIDA, B. G. 700 1 $aRUSSO, R. C. 700 1 $aBARCELOS, L. 700 1 $aCAMARGO, L. S. de A. 700 1 $aVIANA, J. H. M. 773 $tPlos One$gv. 11, n. 6, e0158109, 2016.
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