Buscar recursos académicos

Microalgae are promising platforms for CO2 mitigation. However, high CO2 exposure can impose physiological and environmental constraints, such as acidification and disruption of cellular homeostasis, which impair sensiti...

The aim of this work was to verify if the presence of trees and its height in formed silvipastoral systems with eucalyptus planted in rank can modify the microclimate and improve the environment for bovine raising during...

The Paraná River floodplain comprises one of the largest wetland systems of South America. In a sector of the Lower Paraná River floodplain (100km length, 3650km2), floristic composition and species diversity was chara...

The phase equilibria of binary CO2 + n-alkane mixtures have been studied by an important number of authors, both experimentally and using different types of thermodynamic models. Modeling studies of the phase behavior of...

The contamination of different substrates with diverse types of substances urgently requires theapplication of processes that allow them to be completely removed or, at least, greatly reduced. Theapplication of phytoreme...

This study aim to show the effect of soil  contamination with crude oil and its derivatives on the dry weight and Nutrient minerals on flax (Linum usitatissimum L.) and safflower (Carthamus tinctorius L.). This experime...

Abstract Tomato (Solanum lycopersicum L.) production is increasingly challenged by water limitations and declining soil quality, necessitating efficient alternatives to conventional cultivation. This review examines the ...

Background: Forests are used for multiple purposes worldwide, which often include timber harvest, firewood extraction and livestock raising. An excessive pressure on multipurpose systems may decrease soil cover, promotin...

SUMMARY The slash and burn method was studied with respect to changes on the chemical composition in the top-soil layer (upper 20 cm) of yellow latosols (about 85% of the total area) and hydromorphic soils (about 1% of t...

A mathematical model that simulates the curing process of benzoxazine (Bz) systems is presented. The model predicts the conversion, gel point and Tg along the curing process, and considers the diffusional limitations to ...

In this paper we present a new reduced complexity maximum likelihood sequence detector for intensity modulation / direct detection (IM/DD) fiber optic systems. The proposed detector takes into account the presence of the...

Neste estudo é relatado o uso de espécies vegetais por onze famílias que vivem na área rural do município de Manacapuru, no Amazonas. Foi feita uma abordagem participativa durante as entrevistas, utilizando um formu...

Niche dimensionality provides a general theoretical explanation for biodiversity-more niches, defined by more limiting factors, allow for more ways that species can coexist. Because plant species compete for the same set...

The paper deals with modeling three-dimensional illumination distribution from light sourсes using artificial neural network (ANN). This problem is especially relevant in greenhouse irradiation systems due to the design...

The design of novel delivery systems to treat vaginal fungalinfections is a topic of high interest. Chitosan, being itselfantimicrobial and having good mucoadhesive properties, is an excellentcandidate as a delivery matr...

IntroductionMaize is a global commodity crop cultivated under monocropping systems and diverse environmental conditions. While different genotypes exist with various abilities to store carbon into tissues and into the so...

Platanthera transversa is a common orchid in western North America yet it is poorly studied. This makes it difficult to understand the breadth of pollinators and floral attractant mechanisms present, both of which are vi...

Studies to select one or more species of coverage plants adapted to Amazonian soil and climate conditions of the Amazon are a promising strategy for the improvement of environmental quality, establishing no-till agricult...

This study was conducted to investigate growth response parameters and forage yield of Panicum maximum Jacq. plants supplied with nitrate (NO3-) and ammonium (NH4+) as N source in a nutrient solution. Six NO3- and NH4+ c...

Natural medicine is currently gaining global acceptance among the developed and developing countries of the world due to its low toxicity, high efficacy and cost effectiveness. Developed countries are devising medicinal ...

Reproductive plants in tropical forests are patchily distributed, with some in large aggregations of reproductive consepecifics while others are relatively isolated. This variation in floral density is hypothesized to ha...

Emissions of human-use antibiotics in China pose a significant threat to aquatic ecosystems and accelerate the spread of antimicrobial resistance. Existing assessments lack the facility-level resolution required for effe...

Abstract Man-made synthetic/manufactured nano-objects (MNOs) are increasingly used in almost every scientific sector, including pharmaceutical, agricultural, food, and drug industries worldwide. Rapid advances in nanotec...

Plant-parasitic nematodes (PPNs) are a serious threat to global food security, with estimated annual losses exceeding $173 billion. Beyond their direct damage, interactions between PPNs and other phytopathogens can lead ...