Results 121 to 130 of about 174,046 (216)

Produtos agrícolas transformados [PDF]

open access: yes, 2017
Em rigor, atualmente quase todos os produtos agrícolas sofrem algum tratamento antes de serem vendidos (lavagens, calibração, etc.); adicionalmente, e talvez mais importante, as indústrias genericamente conhecidas como indústrias agroalimentares ...
Duarte, Amílcar   +1 more
core  

Feeding ecology of an Amazonian electric knifefish under altered flood‐pulse dynamics caused by hydroelectric damming

open access: yesJournal of Fish Biology, EarlyView.
Abstract This study evaluated the effects of the controlled flood pulse on diet composition, trophic niche breadth and feeding intensity of Archolaemus janeae, an electric knifefish species with a restricted distribution in the Amazon Basin. Monthly samples were collected from December 2020 to November 2021 in the Volta Grande stretch of the Xingu ...
Ana F. V. N. M. Costa   +8 more
wiley   +1 more source

Foliar nutrient levels of native tree species from Central Amazonia. 2. Campina

open access: yes, 1985
Adult leaves of 14 woody species were sampled in the campina at km 62 of the road Manaus - Caracaraí. The lamina were classified as to their size and analysed for N, P, K, Ca, Mg and Na. Comparing the foliar levels of the bioelements to relevant data for
Klinge, H.
core  

Propagação de acessos de bacurizeiro (Platonia insignis Mart.) através da raiz primária de sementes em início de germinação. [PDF]

open access: yes, 2013
Publicado também: FRAZÃO, D. A. C.; HOMMA, A. K. O; VIÉGAS, I. de J. M. (Ed.). Contribuição ao desenvolvimento da fruticultura na Amazônia. Belém, PA: Embrapa Amazônia Oriental, 2006. p.
CARVALHO, J. E. U. de   +2 more
core  

Historical shifts, geographic biases, and biological constraints shape mammal species discovery

open access: yesJournal of Systematics and Evolution, EarlyView.
Taxonomic descriptions of mammals have become more robust from 1990 to 2025, with increased specimen sampling, broader comparisons, and more integrative methods. However, disparities remain: tropical and small‐bodied species are less comprehensively described, reflecting ongoing geographic and biological biases.
Matheus de T. Moroti   +5 more
wiley   +1 more source

IMPACTO DA PANDEMIA POR CORONAVÍRUS NO ÍNDICE DE RECUSA NA TRIAGEM CLÍNICA NO INSTITUTO DE HEMATOLOGIA E HEMOTERAPIA DE BELÉM – IHEBE

open access: yesHematology, Transfusion and Cell Therapy, 2020
L.N. Guimarães   +9 more
doaj   +1 more source

Leilão dos aeroportos : uma análise da restrição de oferta unitária [PDF]

open access: yes, 2013
Dissertação (mestrado)—Universidade de Brasília, Departamento de Economia, 2013.Em 2012 o Governo Federal realizou a primeira concessão de aeroportos à iniciativa privada. Três aeroportos foram leiloados, os de Brasília, de Guarulhos e de Campinas.
Belém, Antônio Ronieel Bezerra
core  

Small understory trees increase growth following sustained drought in the Amazon

open access: yesNew Phytologist, EarlyView.
Summary Droughts pose a major threat to the Amazon rainforest, yet the mechanisms enabling trees to maintain growth under prolonged drought remain poorly understood, particularly in the understory layer. We leveraged a 22‐yr Throughfall Exclusion (TFE) in a 1‐ha plot in eastern Amazonia, paired with a Control plot, to test whether small understory ...
Mateus C. Silva   +16 more
wiley   +1 more source

Genetic mapping and QTLs detection in a Theobroma grandiflora progeny : S04P01 [PDF]

open access: yes, 2013
The genus Theobroma covers 22 native species to the Amazon region. Two species are cultivated in Brazil:Theobroma cacao and T. grandiflorum (cupuaçu). T.
Alves, Rafael Moyses   +11 more
core  

Canalized to heat, plastic to cold: adaptive coordination of leaf and seed strategies in populations spanning an elevational gradient

open access: yesNew Phytologist, EarlyView.
Summary In tropical mountains, surviving temperature extremes demands finely tuned strategies. We investigated how populations of the bromeliad Pitcairnia flammea across a 2200 m elevational gradient balance genetic canalization and plasticity, and whether thermal strategies are coordinated between seeds and leaves.
Cleber J. N. Chaves   +17 more
wiley   +1 more source

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