Environmental Experiments
Mostrando 1-12 de 604 artigos, teses e dissertações.
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1. Comparative Study of Degradation of Reactive Dyes and Decolorization and Detoxification in Aqueous Solution Applying DyP Peroxidases Isolated from Saccharomonospora viridis (SviDyP) and Thermobifida fusca (TfuDyp)
The wastewater that originates from the widespread usage of synthetic dyes in the industry have become a severe environmental problem. Several efforts have been made to develop new types of treatment which are capable of performing the degradation of the dyes from the environment. Within this scope, much attention has been drawn to enzymatic approaches, main
J. Braz. Chem. Soc.. Publicado em: 2021-06
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2. Effects of addition of engineered ZnO nanoparticles on the stability of colloidal suspensions containing TiO2 interacting with sandy soil
Abstract The stability of colloidal suspensions of engineered nanoparticles in the environment is of great interest for the risk assessment and treatment of hazardous materials. The relevance of this study is due to the evidence that engineered nanoparticles have been produced and used in commercial products in large scale, especially ZnO and TiO2, which are
REM, Int. Eng. J.. Publicado em: 2020-06
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3. DEVELOPMENT OF AN ANALYTICAL METHOD FOR THE DETERMINATION OF LEAD BASED ON LOCAL SURFACE PLASMON RESONANCE OF SILVER NANOPARTICLES
Lead is environmental pollutant that even in low trace is harmful for human health and wildlife. In this study we presented a colorimetric method for determination of Pb2+ in water by aggregation of silver nanoparticles capped citrate in the presence of deferoxamine as chelating agent. Silver nanoparticles were prepared by reduction of AgNO3 with NaBH4. In t
Quím. Nova. Publicado em: 2020-06
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4. METABOLÔMICA DE PLANTAS: MÉTODOS E DESAFIOS
Metabolomics has played a central role in various areas of plant sciences, offering new perspectives for the advancement of agriculture, drug discovery, chemical ecology and taxonomy. Plant metabolomics (identification and quantification) aims to understand the relationship between biological systems and genetic, pathological and or environmental stimuli in
Quím. Nova. Publicado em: 2020-03
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5. Produção de biossurfactantes: manoproteínas intracelulares e soforolipídios extracelulares por Saccharomyces cerevisiae
RESUMO Os biossurfactantes apresentam inúmeras aplicações ambientais e são produzidos por diversos microrganismos. Os provenientes da levedura Saccharomyces cerevisiae são pouco estudados para fins ambientais, sendo atóxicos. Objetivou-se o estudo da produção de biossurfactantes intra e extracelular por essa levedura, desenvolvida em meio de cultivo
Eng. Sanit. Ambient.. Publicado em: 20/12/2019
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6. Response of root-knot nematode Meloidogyne javanica to ozone
RESUMO O nematoide das galhas, Meloidogyne javanica, é um dos principais agentes causadores de doenças de plantas em cultivos de verão em campos e estufas. A fim de reduzir as preocupações ambientais, os compostos com capacidade pesticida com resíduos insignificantes podem ser uma boa alternativa aos pesticidas químicos inseguros. Este estudo foi real
Ciênc. agrotec.. Publicado em: 09/12/2019
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7. Transporte de material dissolvido em superfície impermeável sob chuva artificial analisado com a aplicação do delineamento experimental das faces centradas
RESUMO O estudo do escoamento superficial e transporte de poluentes é de grande importância, pois ajuda na prevenção de impactos ambientais, auxiliando em planejamentos a serem realizados pelo poder público. Neste trabalho, teve-se como objetivo estudar, em laboratório, a dinâmica do transporte de material (cloreto de sódio - NaCl) disposto sobre uma
Eng. Sanit. Ambient.. Publicado em: 09/12/2019
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8. TECHNIQUES TO MINIMIZE THE EFFECTS OF ACUTE HEAT STRESS OR CHRONIC IN BROILERS
ABSTRACT High environmental temperature is limiting factor in broiler production. In order to minimize the undesirable consequences of acute or chronic heat stress, the techniques of fixed dietary electrolyte balance and early heat conditioning were evaluated. The objective of this study was to evaluate the possible interactions and effects of dietary electr
Braz. J. Poult. Sci.. Publicado em: 05/12/2019
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9. Glyphosate Applied at the Early Reproductive Stage Impairs Seed Production of Glyphosate-Resistant Hairy Fleabane
RESUMO: A buva [Conyza bonariensis (L.) Cronq.] resistente ao glyphosate é uma das principais plantas daninhas do mundo. Um dos fatores que fazem com que esta planta esteja amplamente distribuída nos mais diversos ambientes é sua alta capacidade de produção e dispersão de sementes. Plantas de buva não controladas pela aplicação de herbicidas rebrota
Planta daninha. Publicado em: 17/10/2019
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10. Assessment of coconut fibers for textile applications
ABSTRACT Brazil is the fourth larger producer in coconut fruit in the world. However, the industry processes only a small portion of coconut byproducts, which have caused serious environmental problems. The purpose of this article is to test an alternative for the recovery of coconut byproduct. In a series of experiments, recovered coconut fibers (coir) were
Matéria (Rio J.). Publicado em: 16/09/2019
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11. Coprophagy in detritivores: methodological design for feeding studies in terrestrial isopods (Crustacea, Isopoda, Oniscidea)
ABSTRACT Isopods consume feces in laboratory conditions. We investigated the effects of coprophagy on food consumption and assimilation and on isopod biomass to determine the best methodological design for feeding performance experiments. We used three species of isopods representing different eco-morphological groups and two leaves with different nitrogen c
Nauplius. Publicado em: 01/08/2019
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12. Dredging impact on trace metal behavior in a polluted estuary: a discussion about sampling design
ABSTRACT Studies involving coastal sediment resuspension have shown that trace metals could be released to the water column due to changes in physical-chemical conditions. Therefore, if environmental agencies adopt screening protocols with insufficient evaluations of contaminant mobilization risks for a given area, the prediction of environmental impacts cau
Braz. j. oceanogr.. Publicado em: 22/07/2019