Results 11 to 20 of about 129,063 (307)

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

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

Increasing biomass in Amazonian forest plots [PDF]

, 2004
A previous study by Phillips et al. of changes in the biomass of permanent sample plots in Amazonian forests was used to infer the presence of a regional carbon sink.
Abel Monteagudo, Anthony Di Fiore, David A. Neill, J. Natalino M. Silva, Luzmila Arroyo, Malhi Y., Nigel C. A. Pitman, Niro Higuchi, O. L. Phillips, Oliver L. Phillips, Percy Núñez Vargas, Rodolfo Vásquez Martínez, Samuel Almeida, Simon L. Lewis, Susan G. Laurance, Terry Erwin, Timothy J. Killeen, Timothy R. Baker, William F. Laurance, Y. Malhi, Yadvinder Malhi   +20 more
core   +4 more sources

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

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

A remarkable new Anomiopus Westwood from Peru (Coleoptera: Scarabaeidae: Scarabaeinae) [PDF]

, 2013
Described and illustrated is a strikingly distinct new species of the scarabaeine genus Anomiopus Westwood, A.
Edmonds, William David, Figueroa, Luis
core   +2 more sources

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

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

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

An international network to monitor the structure, composition and dynamics of Amazonian forests (RAINFOR) [PDF]

, 2002
The Amazon basin is likely to be increasingly affected by environmental changes: higher temperatures, changes in precipitation, CO2 fertilization and habitat fragmentation.
Almeida, S., Arroyo, L., Baker, T., Frederiksen, T., Grace, J., Higuchi, N., Killeen, T., Laurance, W.F., Leano, C., Lewis, S., Lloyd, J., Malhi, Y., Meir, P., Monteagudo, A., Neill, D., Nunez Vargas, P., Panfil, S.N., Patino, S., Phillips, O.L., Pitman, N., Quesada, C.A., Rudas-Ll, A., Saleska, S., Salomao, R., Silva, N., Silveira, M., Sombroek, W.G., Valencia, R., Vasquez Martinez, R., Vieira, I.C.G., Vinceti, B., Wright, J.   +31 more
core   +1 more source