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排序方式: 共有409条查询结果,搜索用时 46 毫秒
261.
Trentin Edicarla Ferreira Paulo Ademar Avelar Ricachenevsky Felipe Klein Morsch Letícia Hindersmann Jacson Tarouco Camila Peligrinotti Nicoloso Fernando Teixeira da Silva Lincon Oliveira Stefanello De Conti Lessandro da Silva Isley Cristiellem Bicalho Marchezan Carina Ceretta Carlos Alberto Brunetto Gustavo 《Environmental science and pollution research international》2022,29(55):82844-82854
Environmental Science and Pollution Research - High soil copper (Cu) concentrations in vineyards can cause phytotoxicity to grapevine rootstocks. In order to mitigate toxicity, the use of grapevine... 相似文献
262.
Achcar Jorge Alberto de Oliveira Ricardo Puziol 《Environmental Modeling and Assessment》2022,27(2):385-398
Environmental Modeling & Assessment - In this study, non-homogeneous Poisson processes (NHPP) are used to analyze climate data. The data were collected over a certain period time and consist of... 相似文献
263.
264.
Zemiani Adriana Boldarini Maria Theresa Bettin Anami Marcelo Hidemassa de Oliveira Edson Fontes da Silva Alessandra Furtado 《Environmental science and pollution research international》2021,28(31):42107-42120
Environmental Science and Pollution Research - The tolerance of Mentha crispa L. (garden mint) cultivated in cadmium-contaminated oxisol for 120 days was analyzed using plant growth variables such... 相似文献
265.
da Silva Patrícia Rodrigues Borges-Martins Márcio Oliveira Guendalina Turcato 《Environmental science and pollution research international》2021,28(4):4156-4172
Environmental Science and Pollution Research - Melanophryniscus admirabilis is a frog endemic to the southern Atlantic Forest (Brazil), with restricted distribution and considered as critically... 相似文献
266.
Assis Rhayane Alves Rezende Wadson Rodrigues dos Santos Cirley Gomes Araújo Benvindo-Souza Marcelino Amorim Nathan Pereira Lima Borges Rinneu Elias Franco-Belussi Lilian De Oliveira Classius de Souza Santos Lia Raquel 《Environmental science and pollution research international》2021,28(43):60741-60752
Environmental Science and Pollution Research - The sensitivity of anuran to the effects of habitat destruction and contamination has led to a preoccupying global decline in their populations.... 相似文献
267.
Nayara T. do Prado Ana P. Heitmann Herman S. Mansur Alexandra A. Mansur Luiz C.A. Oliveir Cinthia S. de Castro 《环境科学学报(英文版)》2017,29(7):312-320
This work describes the synthesis of catalysts based on red mud/polyethylene terephthalate(PET) composites and their subsequent heat treatment under N2 atmosphere.The materials were characterized by scanning electron microscopy(SEM),temperature programmed reduction(TPR),Fourier transform infrared spectroscopy(FT–IR),X-ray diffraction(XRD),thermogravimetric(TG) analysis and N2adsorption/desorption.The catalysts were evaluated in the oxidative desulfurization reaction of dibenzothiophene(DBT) in a biphasic system.The results indicated that the PET impregnation on red mud increased the affinity of the catalyst with the nonpolar phase(fuel),in which the contaminant was dissolved,allowing a higher conversion(up to 80%) and selectivity to the corresponding dibenzothiophene sulfone.The sulfone compound is more polar than DBT and diffused into the polar solvent as indicated by the data obtained via gas chromatography–mass spectrometry(GC–MS). 相似文献
268.
Verónica Bastos José M.P. Ferreira-de-Oliveir Joana Carrol Ana L. Daniel-da-Silv Iola F. Duarte Conceição Santos Helena Oliveira 《环境科学学报(英文版)》2017,29(1):191-201
The antibacterial potential of silver nanoparticles(AgNPs) resulted in their increasing incorporation into consumer,industrial and biomedical products.Therefore,human and environmental exposure to AgNPs(either as an engineered product or a contaminant)supports the emergent research on the features conferring them different toxicity profiles.In this study,30 ran AgNPs coated with citrate or poly(ethylene glycol)(PEG) were used to assess the influence of coating on the effects produced on a human hepatoma cell line(HepG2),namely in terms of viability,apoptosis,apoptotic related genes,cell cycle and cyclins gene expression.Both types of coated AgNPs decreased cell proliferation and viability with a similar toxicity profile.At the concentrations used(11 and 5 μg/mL corresponding to IC50 and-IC10 levels,respectively) the amount of cells undergoing apoptosis was not significant and the apoptotic related genes BCL2(anti-apoptotic gene)and BAX(pro-apoptotic gene) were both downregulated.Moreover,both AgNPs affected HepG2 cell cycle progression at the higher concentration(11 μg/mL) by increasing the percentage of cells in S(synthesis phase) and G2(Gap 2 phase) phases.Considering the cell-cycle related genes,the expression of cyclin B1 and cyclin E1 genes were decreased.Thus,this work has shown that citrate- and PEG-coated AgNPs impact on HepG2 apoptotic gene expression,cell cycle dynamics and cyclin regulation in a similar way.More research is needed to determine the properties that confer AgNPs at lower toxicity,since their use has proved helpful in several industrial and biomedical contexts. 相似文献
269.
Miguel A. Ramos Nadine R. Sousa Albina R. Franco Vítor Costa Rui S. Oliveira Paula M. L. Castro 《Environmental science and pollution research international》2013,20(1):582-590
Diflubenzuron (DFB) is an insecticide commonly used to control forest pests. The objectives of this study were to assess the effect of diflubenzuron on the development of Pinus pinaster seedlings and Pisolithus tinctorius under laboratory conditions and to study the possible protective role of this ectomycorrhizal fungus against the effects of diflubenzuron. In vitro experiments revealed that diflubenzuron inhibited fungal growth at all tested concentrations (0.01, 0.1, 1, 10 and 100 mg L?1). Root growth was inhibited at the two highest diflubenzuron concentrations. The activity of the antioxidant defence system of non-inoculated P. pinaster increased at 1 and 10 mg DFB kg?1 substrate, and inoculation increased the threshold to the highest concentration. The protective role of the ectomycorrhizal fungus was seen in the increase of CAT activity. This study revealed that despite causing no mortality, diflubenzuron has the ability to cause sub-lethal damage to P. pinaster. The disproportionate use of this insecticide may lead to higher amounts of its residues in soil and the biosphere, endangering trees, fungi and their symbiosis. 相似文献
270.
César Oliveira Casimiro Pio Alexandre Caseiro Patrícia Santos Teresa Nunes Hongjun Mao Lakhumal Luahana Ranjeet Sokhi 《Atmospheric environment (Oxford, England : 1994)》2010,44(26):3147-3158
At urban areas in south Europe atmospheric aerosol levels are frequently above legislation limits as a result of road traffic and favourable climatic conditions for photochemical formation and dust suspension. Strategies for urban particulate pollution control have to take into account specific regional characteristics and need correct information concerning the sources of the aerosol.With these objectives, the ionic and elemental composition of the fine (PM2.5) and coarse (PM2.5–10) aerosol was measured at two contrasting sites in the centre of the city of Oporto, roadside (R) and urban background (UB), during two campaigns, in winter and summer.Application of Spatial Variability Factors, in association with Principal Component/Multilinear Regression/Inter-site Mass Balance Analysis, to aerosol data permitted to identify and quantify 5 main groups of sources, namely direct car emissions, industry, photochemical production, dust suspension and sea salt transport. Traffic strongly influenced PM mass and composition. Direct car emissions and road dust resuspension contributed with 44–66% to the fine aerosol and with 12 to 55% to the coarse particles mass at both sites, showing typically highest loads at roadside. In fine particles secondary origin was also quite important in aerosol loading, principally during summer, with 28–48% mass contribution, at R and UB sites respectively. Sea spray has an important contribution of 18–28% to coarse aerosol mass in the studied area, with a highest relative contribution at UB site.Application of Spatial Variability/Mass Balance Analysis permitted the estimation of traffic contribution to soil dust in both size ranges, across sites and seasons, demonstrating that as much as 80% of present dust can result from road traffic resuspension. 相似文献