Results 11 to 20 of about 16,277 (263)

Major components in oils obtained from Amazonian palm fruits

Grasas y Aceites, 2013
Native palm trees belong to the Arecaceae family and are among the most useful plant resources in the Amazons. Despite its great diversity and various uses, few species have been study in detail, which makes it necessary to perform more comprehensive ...
M. F. G. Santos, S. Marmesat, E. S. Brito, R. E. Alves, M. C. Dobarganes   +4 more
doaj   +1 more source

Molecular Characterization of the Archaeal Community in an Amazonian Wetland Soil and Culture-Dependent Isolation of Methanogenic Archaea

Diversity, 2010
Tropical wetlands are the major natural source of methane released into the atmosphere, producing about 60% of all natural emissions. The great wetland areas of the Amazon basin are the largest source of methane in this region, contributing an estimated ...
Siu M. Tsai, Rosana F. Vazoller, Jeanedy M. Pazinato, Lucas W. Mendes, Ezio N. Paulo   +4 more
doaj   +1 more source

Soil Quality Restoration during the Natural Succession of Abandoned Cattle Pastures in Deforested Landscapes in the Colombian Amazon

Agronomy, 2021
Successional processes in abandoned pastures in the Amazon region have been well-documented for the floristic component; however, soil succession has been poorly studied. This study assessed the physical, chemical and biological responses of soils in the
Carlos H. Rodríguez-León, Clara P. Peña-Venegas, Armando Sterling, Daniel Castro, Lizeth K. Mahecha-Virguez, Yeny R. Virguez-Díaz, Adriana M. Silva-Olaya   +6 more
doaj   +1 more source

Comparative Constructions in Murui (Witotoan, Northwest Amazonia)

Linguistic Discovery, 2018
This paper focuses on the forms and functions of various comparative constructions found in Murui, a Witotoan language of Northwest Amazonia (Colombia, Peru). It analyses different types of comparative construction, their forms and semantics.
Katarzyna I. Wojtylak
doaj   +1 more source

Optimization of the recovery yield of the enzymatic aqueous extraction of oil from wet açaí decocts using Design of Experiment

Grasas y Aceites, 2023
These last decades, açaí oil has been extensively studied for its biological properties and has gained interest from the health industry. It has thus become necessary to develop eco-friendly extraction techniques.
B. Rodrigues, C. Herman
doaj   +1 more source

High Temperature, pH, and Hypoxia Cause Oxidative Stress and Impair the Spermatic Performance of the Amazon Fish Colossoma macropomum

Frontiers in Physiology, 2020
The control of abiotic parameters is fundamental for fish survival, growth and reproduction. These factors have a direct effect on sperm quality. Thus, this study evaluated the effect of different temperatures (29, 31, 33, and 35°C), pHs (4 and 8), and ...
Jonatas S. Castro, Jonatas S. Castro, Susana Braz-Mota, Derek F. Campos, Samara S. Souza, Adalberto L. Val, Adalberto L. Val   +6 more
doaj   +1 more source

Data on the effects of fertilization on growth rates, biomass allocation, carbohydrates and nutrients of nitrogen-fixing and non-nitrogen-fixing tree legumes during tropical forest restoration

BMC Research Notes, 2021
Objectives Tree legume species play an important role in forest restoration in the tropics. Understanding how different species adjust carbohydrate allocation and growth under distinct nutrient availability will enhance the success of restoring degraded ...
Roberto K. Jaquetti, José Francisco C. Gonçalves   +1 more
doaj   +1 more source

50 years of the water-flow variance in Tucuruí reservoir related with Brazilian energy consumption

Heliyon, 2023
Dammed rivers lose its natural characteristics of the flow cycle and becomes controlled by the energy demands of the hydroelectric plants. With the connection of the energy-producing plants to a central station in Brazil the situation is aggravated since
B.S. Godoy, J.H. Ishihara, R.L. Aguiar, O.N. Teixeira   +3 more
doaj   +1 more source

Genetic Architecture and Signatures of Selection in the Caqueteño Creole (Colombian Native Cattle)

Diversity, 2022
Evolutionary mechanisms have shaped the genomic architecture of Colombian Creole cattle breeds. The mating and selection processes have impacted several traits, promoting differences within and between populations.
Alejandra M. Toro-Ospina, Ana C. Herrera Rios, Wellington Bizarria Santos, Gustavo Pimenta Schettini, Viviana H. Vallejo Aristizabal, Gilberto Tovar Claros, Edna Gicela Ortiz Morea   +6 more
doaj   +1 more source

Optional or Syntactic Ergativity in Shawi: Distribution and Possible Origins

Linguistic Discovery, 2017
In this article we provide a preliminary description and analysis of the most common ergative constructions in Shawi, a Kawapanan language spoken in Northwestern Amazonia.
Luis Miguel Rojas-Berscia, Corentin Bourdeau   +1 more
doaj   +1 more source