Results 61 to 70 of about 959,680 (238)

Assessing the evolutionary distinctiveness of a highly threatened plant group: The urgency to preserve a unique lineage of evolution in Brazil

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Brazil's diverse flora is under several threats, with many unique lineages facing extinction, particularly in biodiverse regions like the Cerrado and campo rupestre. This study sheds light on the conservation needs of Cambessedesia (Melastomataceae), an endemic genus with 95% of its species endangered, using an approach to rank and prioritise species ...
Najla Bastos Scheidegger   +4 more
wiley   +1 more source

Previsão não-linear da taxa de câmbio real/dólar utilizando redes neurais e sistemas nebulosos [PDF]

open access: yes, 2005
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Sócio-Econômico.
Santos, André Alves Portela
core  

Balancing tracks and trees: Assessing railroad impact on Brazilian biodiversity

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
The Brazilian West–East Integration Railway (FIOL) aims to boost the national economy by improving commodity transport; however, it crosses three of Brazil's most biodiverse and fragile regions: the Caatinga, Cerrado and Atlantic Forest. Using digitised plant records and land‐use analyses, our study reveals significant vegetation loss within the ...
Ana Luiza Silva Rocha   +3 more
wiley   +1 more source

Processos de transporte em misturas gasosas: formas explícitas dos coeficientes de difusão ordinária e viscosidade [PDF]

open access: yes, 1977
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.
Santos, Sônia Magalhães dos
core  

Effects of Glyphosate on the Planktonic Microbiota: An Experimental Approach

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Glyphosate is one of the most widely used herbicides in the world, including in Brazil, and its dispersion through habitats and surface waters can impact entire aquatic ecosystems. However, experimental studies evaluating the effects of pesticides on whole planktonic communities, considering attributes such as richness, density and composition—
Melissa Progênio   +7 more
wiley   +1 more source

Estabilidade do gerador síncrono com reguladores via método direto de lyapunov [PDF]

open access: yes, 1980
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.
Kolbe, Eduardo Moreno
core  

First Assessment of Genetic Damage in the Speckled Cockroach (Nauphoeta cinerea) After Consumption of Lettuce (Lactuca sativa) Cultivated and Commercialized in Northeastern, Brazil

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT This study reports, for the first time, the use of the speckled cockroach Nauphoeta cinerea as a promising bioindicator for genotoxic monitoring. It was validated through control groups (both positive and negative) in addition to testing lettuce (Lactuca sativa ) samples from public street markets consumed by N. cinerea specimens in Pernambuco,
Aleson Aparecido da Silva   +4 more
wiley   +1 more source

Condutividade hidráulica e Índice S em solo sob Integração-Lavoura-Pecuária-Floresta. [PDF]

open access: yes, 2014
O objetivo deste estudo foi avaliar o efeito da conversão de uma pastagem convencional para iLPF.Pôster - pós ...
ASSIS, P. C. R.   +3 more
core  

Organic and Inorganic Pollutants, Oxidative Stress Biomarkers, and Electrophoretic Protein Profiles in an Endangered Thresher Shark (Alopias vulpinus) From Southeastern Brazil: A Case Study

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT A comprehensive screening of different environmental contaminants (total metals, thermostable metal fractions associated with detoxification, and persistent organic pollutants) was conducted in an endangered common thresher shark (Alopias vulpinus ) individual incidentally captured in southeastern Brazil.
Sidney Fernandes Sales Junior   +10 more
wiley   +1 more source

Caracterização de cultivares e linhagens elite de feijoeiro-comum para teores de ferro e zinco nos grãos. [PDF]

open access: yes, 2014
O objetivo desse trabalho foi identificar cultivares/linhagens elite de feijoeiro-comum com altos teores de ferro e zinco.Pôster - pós ...
DEL PELOSO, M. J.   +7 more
core  

Home - About - Disclaimer - Privacy