Results 61 to 70 of about 91,809 (217)

Biosurfactant production by Pseudomonas aeruginosa isolated from mining waste: From genomic analysis to development of a polymeric composite for removal of hexavalent chromium

open access: yesPolymer International, EarlyView.
Biosurfactant was produced by Pseudomonas aeruginosa using andiroba waste from Amazonia. A biosurfactant–alginate composite (Alg/BioS) was successfully synthesized via ionotropic gelation, and achieved up to 70% Cr6+ removal from water. Abstract Environmental contamination by heavy metals represents a significant challenge due to their persistence in ...
Paulo Diniz Austriaco   +11 more
wiley   +1 more source

Determinación de la tasa respiratoria de Eugenia stipitata Mc Vaugh (arazá) y Myrcyaria dubia HBK (camu-camu)

open access: yesCiencia Amazónica (Iquitos), 2013
En el presente trabajo se determinó diariamente la tasa respiratoria de Eugenia stipitata Mc Vaugh (arazá)  y Myrcyaria dubia  HBK (camu-camu) a temperaturas de 10, 20 y 28°C, utilizando un respirómetro construido en el laboratorio.
Littman Gonzáles   +3 more
doaj  

La selva amazónica como problema geográfico [PDF]

open access: yes, 2001
Utilizando el concepto de paisaje, la región tropical de la Amazonía es analizada como un problema de estudio para la geografía. Se presentan los efectos del clima en la dinámica regional y se hace una breve consideración de los indígenas como ...
Pereira de Lima, Ricardo Ângelo
core   +1 more source

Digitizing collections to unlock the full potential of palynology: A case study with the Smithsonian palynology collection

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Large palynological collections have been built over decades and contain vital information. However, they are often difficult to access and use effectively. What is the point of having such collections if they are not fully utilizable? To solve this problem, we digitized the Smithsonian palynological collection using both light and confocal microscopy.
Carlos Jaramillo   +37 more
wiley   +1 more source

Rarity of monodominance in hyperdiverse Amazonian forests. [PDF]

open access: yes, 2019
Tropical forests are known for their high diversity. Yet, forest patches do occur in the tropics where a single tree species is dominant. Such "monodominant" forests are known from all of the main tropical regions. For Amazonia, we sampled the occurrence
Alonso, Alfonso   +99 more
core  

An interdisciplinary review of the interplay of conflict, socio‐economic factors, and land cover and vegetation dynamics in Colombia

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Colombia's forests play a crucial role in preserving biodiversity and mitigating climate change, but they are currently facing severe degradation, particularly after the 2016 Peace Agreement. Our literature review highlights a growing research interest in this topic and demonstrates how interdisciplinary approaches combining diverse methods can enhance
Estefanía Muñoz   +13 more
wiley   +1 more source

Rooting of sacha inchi (Plukenetia volubilis) juvenile cuttings in microtunnels

open access: yesActa Agronómica, 2019
The seeds of sacha inchi (Plukenetia volubilis) have high levels of proteins and unsaturated fatty acids, and due to their nutraceutical potential, their demand in the international market has increased in recent years.
Reynaldo Solis   +4 more
doaj   +1 more source

Runa y su impacto en la amazonía su modelo, ¿base del desarrollo sostenible en la amazonía ecuatoriana? [PDF]

open access: yes, 2013
The following document analyzes the situation of poverty in Ecuador, especially in the Amazon region, in the province of Napo. Grupo Runa has worked in this area in order to reduce the level of poverty and promote sustainable and responsible ...
Cerda Tapuy, Leonardo Leonel
core  

Cyanogenic Compounds, Physicochemical Parameters and Metals in Water From Cassava Processing Areas: A Study in the Brazilian Amazon, Using Multivariate Analysis

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT This study evaluated the water quality of artesian wells and effluents generated in cassava processing in a rural area of Bragança, Pará, with emphasis on physicochemical parameters, multielement composition, and cyanogenic compounds. The well water presented specific nonconformities, highlighting pH values below the recommended level and high
Alana Coêlho Maciel   +13 more
wiley   +1 more source

Time of Stablishment of Pastures and Their Relationship with Arbuscular Mycorrhiza in Hilly Terrain and Fertile Valley

open access: yesActa Biológica Colombiana, 2006
The subject of this research was to evaluate the effect of the time of establishment (0-5 years, 5-10 years, and more than 10 years.) of pastures of Brachiaria sp.
Raúl Hernando Posada Almanza   +2 more
doaj  

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