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Assessment of Chlorine, Fluorine, and Sulfur Concentrations in Depth Profile of Drill Cuttings from Onshore and Offshore Oil and Gas Exploration Wells
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Marim, Renan G.
; Coelho Junior, Gilberto S.
; Azevedo, Paola C. C. de
; Borges, Daniel L. G.
; Maranhão, Tatiane A.
; Oliveira, Fernando J. S. de
; Bascunãn, Vera L. A. F.
; Chaves, Eduardo S.
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Journal of the Brazilian Chemical Society
- Métricas do periódico
The assessment of chlorine, fluorine, and sulfur concentrations in depth profile of drill cuttings was performed using ion chromatography after sample preparation by pyrohydrolysis. The parameters for pyrohydrolysis were optimized using a Box-Behnken design, and the established conditions were 300 mg of sample, 300 mg of V2O5, temperature of 1000 °C, reaction time of 25 min, and absorbing solution of 50 mmol L-1 NH3 + 150 mmol L-1 H2O2. The accuracy was evaluated by the analysis of certified reference materials and recovery tests, and the results showed a good agreement between determined and certified values and recoveries (89-108%). The precision (relative standard deviation (RSD) < 10%), and the limits of detection (0.5-2.5 mg kg 1) were suitable for drill cuttings analysis. The concentration of chlorine, fluorine, and sulfur in drill cuttings at different depths was at mg g-1 range, and its variation is related to the mineral composition of the samples.
2.
Guideline of the Brazilian Society of Cardiology on Telemedicine in Cardiology - 2019
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Lopes, Marcelo Antônio Cartaxo Queiroga
; Oliveira, Gláucia Maria Moraes de
; Ribeiro, Antonio Luiz Pinho
; Pinto, Fausto J.
; Rey, Helena Cramer Veiga
; Zimerman, Leandro Ioschpe
; Rochitte, Carlos Eduardo
; Bacal, Fernando
; Polanczyk, Carisi Anne
; Halperin, Cidio
; Araújo, Edson Correia
; Mesquita, Evandro Tinoco
; Arruda, José Airton
; Rohde, Luis Eduardo Paim
; Grinberg, Max
; Moretti, Miguel
; Caramori, Paulo Ricardo Avancini
; Botelho, Roberto Vieira
; Brandão, Andréa Araújo
; Hajjar, Ludhmila Abrahão
; Santos, Alexandre Fonseca
; Colafranceschi, Alexandre Siciliano
; Etges, Ana Paula Beck da Silva
; Marino, Bárbara Campos Abreu
; Zanotto, Bruna Stella
; Nascimento, Bruno Ramos
; Medeiros, Cesar Rocha
; Santos, Daniel Vitor de Vasconcelos
; Cook, Daniela Matos Arrowsmith
; Antoniolli, Eduardo
; Souza Filho, Erito Marques de
; Fernandes, Fábio
; Gandour, Fabio
; Fernandez, Francisco
; Souza, Germano Emilio Conceição
; Weigert, Guilherme de Souza
; Castro, Iran
; Cade, Jamil Ribeiro
; Figueiredo Neto, José Albuquerque de
; Fernandes, Juliano de Lara
; Hadlich, Marcelo Souza
; Oliveira, Marco Antonio Praça
; Alkmim, Maria Beatriz
; Paixão, Maria Cristina da
; Prudente, Maurício Lopes
; Aguiar Netto, Miguel A. S.
; Marcolino, Milena Soriano
; Oliveira, Monica Amorim de
; Simonelli, Osvaldo
; Lemos Neto, Pedro A.
; Rosa, Priscila Raupp da
; Figueira, Renato Minelli
; Cury, Roberto Caldeira
; Almeida, Rodrigo Coelho
; Lima, Sandra Regina Franco
; Barberato, Silvio Henrique
; Constancio, Thiago Inocêncio
; Rezende, Wladimir Fernandes de
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Arquivos Brasileiros de Cardiologia
- Métricas do periódico
https://doi.org/10.5935/abc.20190205
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3.
Growing knowledge: an overview of Seed Plant diversity in Brazil
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Zappi, Daniela C.
; Filardi, Fabiana L. Ranzato
; Leitman, Paula
; Souza, Vinícius C.
; Walter, Bruno M.T.
; Pirani, José R.
; Morim, Marli P.
; Queiroz, Luciano P.
; Cavalcanti, Taciana B.
; Mansano, Vidal F.
; Forzza, Rafaela C.
; Abreu, Maria C.
; Acevedo-Rodríguez, Pedro
; Agra, Maria F.
; Almeida Jr., Eduardo B.
; Almeida, Gracineide S.S.
; Almeida, Rafael F.
; Alves, Flávio M.
; Alves, Marccus
; Alves-Araujo, Anderson
; Amaral, Maria C.E.
; Amorim, André M.
; Amorim, Bruno
; Andrade, Ivanilza M.
; Andreata, Regina H.P.
; Andrino, Caroline O.
; Anunciação, Elisete A.
; Aona, Lidyanne Y.S.
; Aranguren, Yani
; Aranha Filho, João L.M.
; Araújo, Andrea O.
; Araújo, Ariclenes A.M.
; Araújo, Diogo
; Arbo, María M.
; Assis, Leandro
; Assis, Marta C.
; Assunção, Vivian A.
; Athiê-Souza, Sarah M.
; Azevedo, Cecilia O.
; Baitello, João B.
; Barberena, Felipe F.V.A.
; Barbosa, Maria R.V.
; Barros, Fábio
; Barros, Lucas A.V.
; Barros, Michel J.F.
; Baumgratz, José F.A.
; Bernacci, Luis C.
; Berry, Paul E.
; Bigio, Narcísio C.
; Biral, Leonardo
; Bittrich, Volker
; Borges, Rafael A.X.
; Bortoluzzi, Roseli L.C.
; Bove, Cláudia P.
; Bovini, Massimo G.
; Braga, João M.A.
; Braz, Denise M.
; Bringel Jr., João B.A.
; Bruniera, Carla P.
; Buturi, Camila V.
; Cabral, Elza
; Cabral, Fernanda N.
; Caddah, Mayara K.
; Caires, Claudenir S.
; Calazans, Luana S.B.
; Calió, Maria F.
; Camargo, Rodrigo A.
; Campbell, Lisa
; Canto-Dorow, Thais S.
; Carauta, Jorge P.P.
; Cardiel, José M.
; Cardoso, Domingos B.O.S.
; Cardoso, Leandro J.T.
; Carneiro, Camila R.
; Carneiro, Cláudia E.
; Carneiro-Torres, Daniela S.
; Carrijo, Tatiana T.
; Caruzo, Maria B.R.
; Carvalho, Maria L.S.
; Carvalho-Silva, Micheline
; Castello, Ana C.D.
; Cavalheiro, Larissa
; Cervi, Armando C.
; Chacon, Roberta G.
; Chautems, Alain
; Chiavegatto, Berenice
; Chukr, Nádia S.
; Coelho, Alexa A.O.P.
; Coelho, Marcus A.N.
; Coelho, Rubens L.G.
; Cordeiro, Inês
; Cordula, Elizabeth
; Cornejo, Xavier
; Côrtes, Ana L.A.
; Costa, Andrea F.
; Costa, Fabiane N.
; Costa, Jorge A.S.
; Costa, Leila C.
; Costa-e-Silva, Maria B.
; Costa-Lima, James L.
; Cota, Maria R.C.
; Couto, Ricardo S.
; Daly, Douglas C.
; De Stefano, Rodrigo D.
; De Toni, Karen
; Dematteis, Massimiliano
; Dettke, Greta A.
; Di Maio, Fernando R.
; Dórea, Marcos C.
; Duarte, Marília C.
; Dutilh, Julie H.A.
; Dutra, Valquíria F.
; Echternacht, Lívia
; Eggers, Lilian
; Esteves, Gerleni
; Ezcurra, Cecilia
; Falcão Junior, Marcus J.A.
; Feres, Fabíola
; Fernandes, José M.
; Ferreira, D.M.C.
; Ferreira, Fabrício M.
; Ferreira, Gabriel E.
; Ferreira, Priscila P.A.
; Ferreira, Silvana C.
; Ferrucci, Maria S.
; Fiaschi, Pedro
; Filgueiras, Tarciso S.
; Firens, Marcela
; Flores, Andreia S.
; Forero, Enrique
; Forster, Wellington
; Fortuna-Perez, Ana P.
; Fortunato, Reneé H.
; Fraga, Cléudio N.
; França, Flávio
; Francener, Augusto
; Freitas, Joelcio
; Freitas, Maria F.
; Fritsch, Peter W.
; Furtado, Samyra G.
; Gaglioti, André L.
; Garcia, Flávia C.P.
; Germano Filho, Pedro
; Giacomin, Leandro
; Gil, André S.B.
; Giulietti, Ana M.
; A.P.Godoy, Silvana
; Goldenberg, Renato
; Gomes da Costa, Géssica A.
; Gomes, Mário
; Gomes-Klein, Vera L.
; Gonçalves, Eduardo Gomes
; Graham, Shirley
; Groppo, Milton
; Guedes, Juliana S.
; Guimarães, Leonardo R.S.
; Guimarães, Paulo J.F.
; Guimarães, Elsie F.
; Gutierrez, Raul
; Harley, Raymond
; Hassemer, Gustavo
; Hattori, Eric K.O.
; Hefler, Sonia M.
; Heiden, Gustavo
; Henderson, Andrew
; Hensold, Nancy
; Hiepko, Paul
; Holanda, Ana S.S.
; Iganci, João R.V.
; Imig, Daniela C.
; Indriunas, Alexandre
; Jacques, Eliane L.
; Jardim, Jomar G.
; Kamer, Hiltje M.
; Kameyama, Cíntia
; Kinoshita, Luiza S.
; Kirizawa, Mizué
; Klitgaard, Bente B.
; Koch, Ingrid
; Koschnitzke, Cristiana
; Krauss, Nathália P.
; Kriebel, Ricardo
; Kuntz, Juliana
; Larocca, João
; Leal, Eduardo S.
; Lewis, Gwilym P.
; Lima, Carla T.
; Lima, Haroldo C.
; Lima, Itamar B.
; Lima, Laíce F.G.
; Lima, Laura C.P.
; Lima, Leticia R.
; Lima, Luís F.P.
; Lima, Rita B.
; Lírio, Elton J.
; Liro, Renata M.
; Lleras, Eduardo
; Lobão, Adriana
; Loeuille, Benoit
; Lohmann, Lúcia G.
; Loiola, Maria I.B.
; Lombardi, Julio A.
; Longhi-Wagner, Hilda M.
; Lopes, Rosana C.
; Lorencini, Tiago S.
; Louzada, Rafael B.
; Lovo, Juliana
; Lozano, Eduardo D.
; Lucas, Eve
; Ludtke, Raquel
; Luz, Christian L.
; Maas, Paul
; Machado, Anderson F.P.
; Macias, Leila
; Maciel, Jefferson R.
; Magenta, Mara A.G.
; Mamede, Maria C.H.
; Manoel, Evelin A.
; Marchioretto, Maria S.
; Marques, Juliana S.
; Marquete, Nilda
; Marquete, Ronaldo
; Martinelli, Gustavo
; Martins da Silva, Regina C.V.
; Martins, Ângela B.
; Martins, Erika R.
; Martins, Márcio L.L.
; Martins, Milena V.
; Martins, Renata C.
; Matias, Ligia Q.
; Maya-L., Carlos A.
; Mayo, Simon
; Mazine, Fiorella
; Medeiros, Debora
; Medeiros, Erika S.
; Medeiros, Herison
; Medeiros, João D.
; Meireles, José E.
; Mello-Silva, Renato
; Melo, Aline
; Melo, André L.
; Melo, Efigênia
; Melo, José I.M.
; Menezes, Cristine G.
; Menini Neto, Luiz
; Mentz, Lilian A.
; Mezzonato, A.C.
; Michelangeli, Fabián A.
; Milward-de-Azevedo, Michaele A.
; Miotto, Silvia T.S.
; Miranda, Vitor F.O.
; Mondin, Cláudio A.
; Monge, Marcelo
; Monteiro, Daniele
; Monteiro, Raquel F.
; Moraes, Marta D.
; Moraes, Pedro L.R.
; Mori, Scott A.
; Mota, Aline C.
; Mota, Nara F.O.
; Moura, Tania M.
; Mulgura, Maria
; Nakajima, Jimi N.
; Nardy, Camila
; Nascimento Júnior, José E.
; Noblick, Larry
; Nunes, Teonildes S.
; O'Leary, Nataly
; Oliveira, Arline S.
; Oliveira, Caetano T.
; Oliveira, Juliana A.
; Oliveira, Luciana S.D.
; Oliveira, Maria L.A.A.
; Oliveira, Regina C.
; Oliveira, Renata S.
; Oliveira, Reyjane P.
; Paixão-Souza, Bruno
; Parra, Lara R.
; Pasini, Eduardo
; Pastore, José F.B.
; Pastore, Mayara
; Paula-Souza, Juliana
; Pederneiras, Leandro C.
; Peixoto, Ariane L.
; Pelissari, Gisela
; Pellegrini, Marco O.O.
; Pennington, Toby
; Perdiz, Ricardo O.
; Pereira, Anna C.M.
; Pereira, Maria S.
; Pereira, Rodrigo A.S.
; Pessoa, Clenia
; Pessoa, Edlley M.
; Pessoa, Maria C.R.
; Pinto, Luiz J.S.
; Pinto, Rafael B.
; Pontes, Tiago A.
; Prance, Ghillean T.
; Proença, Carolyn
; Profice, Sheila R.
; Pscheidt, Allan C.
; Queiroz, George A.
; Queiroz, Rubens T.
; Quinet, Alexandre
; Rainer, Heimo
; Ramos, Eliana
; Rando, Juliana G.
; Rapini, Alessandro
; Reginato, Marcelo
; Reis, Ilka P.
; Reis, Priscila A.
; Ribeiro, André R.O.
; Ribeiro, José E.L.S.
; Riina, Ricarda
; Ritter, Mara R.
; Rivadavia, Fernando
; Rocha, Antônio E.S.
; Rocha, Maria J.R.
; Rodrigues, Izabella M.C.
; Rodrigues, Karina F.
; Rodrigues, Rodrigo S.
; Rodrigues, Rodrigo S.
; Rodrigues, Vinícius T.
; Rodrigues, William
; Romaniuc Neto, Sérgio
; Romão, Gerson O.
; Romero, Rosana
; Roque, Nádia
; Rosa, Patrícia
; Rossi, Lúcia
; Sá, Cyl F.C.
; Saavedra, Mariana M.
; Saka, Mariana
; Sakuragui, Cássia M.
; Salas, Roberto M.
; Sales, Margareth F.
; Salimena, Fatima R.G.
; Sampaio, Daniela
; Sancho, Gisela
; Sano, Paulo T.
; Santos, Alessandra
; Santos, Élide P.
; Santos, Juliana S.
; Santos, Marianna R.
; Santos-Gonçalves, Ana P.
; Santos-Silva, Fernanda
; São-Mateus, Wallace
; Saraiva, Deisy P.
; Saridakis, Dennis P.
; Sartori, Ângela L.B.
; Scalon, Viviane R.
; Schneider, Ângelo
; Sebastiani, Renata
; Secco, Ricardo S.
; Senna, Luisa
; Senna-Valle, Luci
; Shirasuna, Regina T.
; Silva Filho, Pedro J.S.
; Silva, Anádria S.
; Silva, Christian
; Silva, Genilson A.R.
; Silva, Gisele O.
; Silva, Márcia C.R.
; Silva, Marcos J.
; Silva, Marcos J.
; Silva, Otávio L.M.
; Silva, Rafaela A.P.
; Silva, Saura R.
; Silva, Tania R.S.
; Silva-Gonçalves, Kelly C.
; Silva-Luz, Cíntia L.
; Simão-Bianchini, Rosângela
; Simões, André O.
; Simpson, Beryl
; Siniscalchi, Carolina M.
; Siqueira Filho, José A.
; Siqueira, Carlos E.
; Siqueira, Josafá C.
; Smith, Nathan P.
; Snak, Cristiane
; Soares Neto, Raimundo L.
; Soares, Kelen P.
; Soares, Marcos V.B.
; Soares, Maria L.
; Soares, Polyana N.
; Sobral, Marcos
; Sodré, Rodolfo C.
; Somner, Genise V.
; Sothers, Cynthia A.
; Sousa, Danilo J.L.
; Souza, Elnatan B.
; Souza, Élvia R.
; Souza, Marcelo
; Souza, Maria L.D.R.
; Souza-Buturi, Fátima O.
; Spina, Andréa P.
; Stapf, María N.S.
; Stefano, Marina V.
; Stehmann, João R.
; Steinmann, Victor
; Takeuchi, Cátia
; Taylor, Charlotte M.
; Taylor, Nigel P.
; Teles, Aristônio M.
; Temponi, Lívia G.
; Terra-Araujo, Mário H.
; Thode, Veronica
; Thomas, W.Wayt
; Tissot-Squalli, Mara L.
; Torke, Benjamin M.
; Torres, Roseli B.
; Tozzi, Ana M.G.A.
; Trad, Rafaela J.
; Trevisan, Rafael
; Trovó, Marcelo
; Valls, José F.M.
; Vaz, Angela M.S.F.
; Versieux, Leonardo
; Viana, Pedro L.
; Vianna Filho, Marcelo D.M.
; Vieira, Ana O.S.
; Vieira, Diego D.
; Vignoli-Silva, Márcia
; Vilar, Thaisa
; Vinhos, Franklin
; Wallnöfer, Bruno
; Wanderley, Maria G.L.
; Wasshausen, Dieter
; Watanabe, Maurício T.C.
; Weigend, Maximilian
; Welker, Cassiano A.D.
; Woodgyer, Elizabeth
; Xifreda, Cecilia C.
; Yamamoto, Kikyo
; Zanin, Ana
; Zenni, Rafael D.
; Zickel, Carmem S
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Resumo Um levantamento atualizado das plantas com sementes e análises relevantes acerca desta biodiversidade são apresentados. Este trabalho se iniciou em 2010 com a publicação do Catálogo de Plantas e Fungos e, desde então vem sendo atualizado por mais de 430 especialistas trabalhando online. O Brasil abriga atualmente 32.086 espécies nativas de Angiospermas e 23 espécies nativas de Gimnospermas e estes novos dados mostram um aumento de 3% da riqueza em relação a 2010. A Amazônia é o Domínio Fitogeográfico com o maior número de espécies de Gimnospermas, enquanto que a Floresta Atlântica possui a maior riqueza de Angiospermas. Houve um crescimento considerável no número de espécies e nas taxas de endemismo para a maioria dos Domínios (Caatinga, Cerrado, Floresta Atlântica, Pampa e Pantanal), com exceção da Amazônia que apresentou uma diminuição de 2,5% de endemicidade. Entretanto, a maior parte das plantas com sementes que ocorrem no Brasil (57,4%) é endêmica deste território. A proporção de formas de vida varia de acordo com os diferentes Domínios: árvores são mais expressivas na Amazônia e Floresta Atlântica do que nos outros biomas, ervas são dominantes no Pampa e as lianas apresentam riqueza expressiva na Amazônia, Floresta Atlântica e Pantanal. Este trabalho não só quantifica a biodiversidade brasileira, mas também indica as lacunas de conhecimento e o desafio a ser enfrentado para a conservação desta flora.
Abstract An updated inventory of Brazilian seed plants is presented and offers important insights into the country's biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, showing an increase of 3% in its species richness in relation to 2010. The Amazon Rainforest is the richest Brazilian biome for Gymnosperms, while the Atlantic Rainforest is the richest one for Angiosperms. There was a considerable increment in the number of species and endemism rates for biomes, except for the Amazon that showed a decrease of 2.5% of recorded endemics. However, well over half of Brazillian seed plant species (57.4%) is endemic to this territory. The proportion of life-forms varies among different biomes: trees are more expressive in the Amazon and Atlantic Rainforest biomes while herbs predominate in the Pampa, and lianas are more expressive in the Amazon, Atlantic Rainforest, and Pantanal. This compilation serves not only to quantify Brazilian biodiversity, but also to highlight areas where there information is lacking and to provide a framework for the challenge faced in conserving Brazil's unique and diverse flora.
https://doi.org/10.1590/2175-7860201566411
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4.
IV Diretriz para uso da Monitorização Ambulatorial da Pressão Arterial - II Diretriz para uso da Monitorização Residencial da Pressão Arterial IV MAPA / II MRPA
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Alessi, Alexandre
; Brandão, Andréa A.
; Pierin, Ângela
; Feitosa, Audes Magalhães
; Machado, Carlos Alberto
; Forjaz, Cláudia Lúcia de Moraes
; Atie, Cristina S.
; Giorgi, Dante Marcelo Artigas
; Mion Jr., Décio
; Rosa, Eduardo Cantoni
; Nobre, Fernando
; Silva, Giovânio Vieira
; Chaves Jr., Hilton
; Pascoal, Istênio José Fernandes
; Guimarães, Jorge Ilha
; Santello, José Luis
; Ribeiro, José Márcio
; Praxedes, José Nery
; Ortega, Kátia Coelho
; Costa, Lílian Soares da
; Bortolotto, Luis Aparecido
; Gomes, Marco Antonio Mota
; Wajngarten, Maurício
; Gus, Miguel
; Kohlmann Jr., Osvaldo
; Jardim, Paulo César Veiga
; Geleilete, Tufik José Magalhães
; Koch, Vera
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Arquivos Brasileiros de Cardiologia
- Métricas do periódico
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Citado 3 vezes em SciELO
5.
III Diretriz sobre tratamento do infarto agudo do miocárdio
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Piegas, Leopoldo S.
; Timerman, Ari
; Nicolau, José Carlos
; Mattos, Luiz Alberto
; Rossi Neto, João Manoel
; Feitosa, Gilson S.
; Avezum, Álvaro
; Carvalho, Antonio Carlos C.
; Mansur, Antonio de Pádua
; Timerman, Ari
; Guimarães, Armênio Costa
; Bozza, Augusto Elias Z.
; Markman F., Brivaldo
; Polanczyk, Carisi A.
; Serrano, Carlos Vicente
; Oliveira, César Cardoso de
; Alves, Claudia M. Rodrigues
; Précoma, Dalton Bertolim
; Albuquerque, Denílson Campos de
; Romano, Edson Renato
; Stefanini, Edson
; Knobel, Elias
; Santos, Elisabete S.
; God, Epotamenides M. Good
; Silva, Expedito E. Ribeiro da
; Brito, Fábio Sandoli de
; Reis, Gilmar
; Feitosa, Gilson S.
; Lima, Gustavo Glotz de
; Atie, Jacob
; Rossi Neto, João Manoel
; Marin Neto, José Antonio
; Nicolau, José Carlos
; Saraiva, José Francisco Kerr
; Amino, José Geraldo de Castro
; Piegas, Leopoldo S.
; Maia, Lilia Nigro
; Moreira, Luis Felipe
; Mattos, Luiz Alberto
; Arraes, Magaly
; Coutinho, Mário
; Dutra, Oscar
; Coelho, Otávio Rizzi
; Leães, Paulo Ernesto
; Rossi, Paulo Roberto Ferreira
; Albuquerque, Pedro
; Bassan, Roberto
; Esporcatte, Roberto
; Giraldez, Roberto Rocha
; Meneghelo, Romeu Sérgio
; Ramos, Rui Fernando
; Carvalho, Valéria Bezerra de
; Mathias, Wilson
; Guimarães, Jorge Ilha
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Arquivos Brasileiros de Cardiologia
- Métricas do periódico
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6.
Utilização de α,α-Diclorociclobutanonas em Síntese de Produtos Naturais
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The preparation and chemical potentiality of a,a-dichlorocyclobutanones as useful intermediates in the total synthesis of natural products are reviewed. Some aspects related to the recent advances reported in the literature about the mechanism of [2+2] cycloaddition reaction between dichloroketene and olefins are also presented.
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7.
Absorção de nutrientes pela planta de amendoim em cultura de primavera
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É apresentado estudo relativo à acumulação de matéria sêca, concentração e absorção de nutrientes em plantas de amendoim, em latossolo vermelho escuro, adubado e sem adubação. Em amostras de plantas colhidas semanalmente foram determinados os elementos: N, P, K, Ca, Mg e S. A adubação trouxe aumento de 85% no pêso sêco dos frutos e 53% no da planta. Com exceção do cálcio e do magnésio, os teores dos demais elementos foram mais elevados nas plantas adubadas. Cêrca de 80% do total de matéria sêca e de nutrientes nas plantas adubadas foram acumulados no período entre início da frutificação e início da maturação dos frutos. Nas plantas não adubadas essa acumulação representa cêrca de 60%. Êsses resultados evidenciam o período em que as plantas devem encontrar maior disponibilidade de nutrientes no solo.
The dry matter accumulation and absorption as well as the accumulation of nitrogen, phosphorus, potassium, calcium, magnesium and sulfur by peanut in several growth stages under field conditions during the rainy season were investigated. The experiment was conducted at the Experimental Station "Theodureto de Camargo", in Campinas, where the soil is "dark red latosol". The seed variety used was "Tatu", and treatments comprised plots with and without fertilizer. The fertilizer treatment included micronutrients. The cultivation and insect and fungi control were those customary in large plantations. Plant sampling started 15 days after the emergence of the plants,, and from then on, once every week, until cropping time. For analytical purposes, the samples were divided into root, stem, leaf, and the fruit into shell and seed. The results showed definite patterns of accumulation of nutrients in the plant, as follows: nitrogen and phosphorus in the seed, sulfur in the root and potassium, calcium and magnesium in the stem and foliage. From the supplied elements, nitrogen, potassium and calcium were the most absorbed. The highest nutrient demand occurred in the period between early frutification and beginning of leaf shedding, three weeks before the cropping. In this period were accumulated about 80% and 60% from the total dry matter and total nutrients, respectively. At cropping time the fruit dry weight was greater than the vegetative part.
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8.
A análise foliar na nutrição do milho. I - Resultados preliminares
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9.
Análise de folíolos e pecíolos na diagnose da nutrição da batatinha
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O trabalho trata da primeira fase dc estudo que visa adaptar a técnica de análise foliar à diagnose da nutrição mineral da batatinha. Foram comparadas as produções de tubérculos com a composição de pecíolos e folíolos colhidos em três fases do ciclo vegetativo dc plantas cultivadas em vasos, adubados com NPK, em doses crescentes de um elemento na presença da dose máxima dos outros dois. Houve resposta a nitrogênio e fósforo na produção, apresentando ainda as plantas sintomas típicos de deficiências quando se omitiram êsses elementos. A análise foliar forneceu uma noção precisa do estado nutricional das plantas. A omissão do potássio não afetou significativamente a produção, e diferenças na concentração de potássio nas fôlhas só foram notadas quando as plantas se aproximaram da fase de maturação. Em vista da maior sensibilidade nas análises e para simplificar a amostragem, podem ser recomendadas as determinações do nitrogênio solúvel (N-NO3), fósforo solúvel (P-PO4) e potássio (K), nos pecíolos das terceiras fôlhas. Considera-se, para êsse fim, apenas a porção da fôlha entre o caule e a inserção do primeiro folíolo desenvolvido.
This article deals with the preliminary phases of a study aimed at adapting the technique of foliar analysis for diagnosing the mineral nutrition of potatoes. In a pot experiment, analytical results for petioles and leaflets were obtained at three sampling dates and yields of tubers were measured. There were three series of fertilizer treatments with graded amounts of N, P, or K in the presence of the highest level of the other two elements. Yield responses were obtained to nitrogen and phosphorus, the plants showing typical deficiency symptoms when either of these elements was omitted. For both N and P the nutritional status of the plants was clearly reflected in the results of foliar analysis. The omission of potassium had no significant effect on yield, and differences in leaf composition were found only at the last sampling date. It appears that for greatest sensitivity and simplification of sampling, analyses should be made for soluble nitrogen (NO3-N), soluble phosphorus (PO4-P) and total potassium in petioles of the third leaf front the apical bud.
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