Results 51 to 60 of about 12,654 (257)

Lipids as indicators of nitrogen cycling in present and past anoxic oceans

, 2018
Nitrogen (N) cycling influences primary production in the ocean and, hence, the global climate. It is performed by a variety of microorganisms, including eukaryotes, bacteria and archaea in oxic, suboxic, and anoxic waters. Our knowledge of the reactions
Sollai, M., Organic geochemistry & molecular biogeology, Organic geochemistry   +2 more
core  

Preclinical Toxicity Screening of Sodium Dodecanoyloxybenzenesulfonate (LOBS) as a New Alternative Biocide Using In Vitro and In Vivo Models

Environmental Toxicology, EarlyView.
ABSTRACT Sodium hypochlorite is a well‐established biocide extensively used in both living and industrial environments; however, exposure to it or improper handling can harm the human body and the environment. Thus, safer alternatives to sodium hypochlorite are required.
Seung Eui Min, Seunghee Oh, Min Seong Jang, Kang‐Hyun Han   +3 more
wiley   +1 more source

Sources and sinks of branched tetraether lipids and bacteriohopanepolyols in a major river system (Yenisei River – Kara Sea: Implications for their application as geochemical tracers

, 2015
Understanding and predicting climate variability is a major scientific challenge, especiallyas climate-induced environmental change will impact on human society.
Organic geochemistry & molecular biogeology, Organic geochemistry, de Jonge, C.   +2 more
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Genome analysis of Chitinivibrio alkaliphilus gen. nov., sp. nov., a novel extremely haloalkaliphilic anaerobic chitinolytic bacterium from the candidate phylum Termite Group 3

, 2014
Anaerobic enrichments from hypersaline soda lakes with chitin as substrate yielded five closely related anaerobic haloalkaliphilic isolates growing on insoluble chitin by fermentation at pH10 and salinities up to 3.5M.
Rakitin, A.L., Mardanov, A.V., Organic geochemistry & molecular biogeology, Beletsky, A.V., Sorokin, D.Y., Muyzer, G., Organic geochemistry, Sinninghe Damsté, J.S., Gumerov, V.M., Ravin, N.V.   +9 more
core   +1 more source

Effects of Glyphosate on the Planktonic Microbiota: An Experimental Approach

Environmental 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, Matheus Henrique Oliveira de Matos, Edilaine Corrêa Leite, Bianca Ramos de Meira, João Vitor Bredariol, José Eduardo Gonçalves, Pablo Augusto Poleto Antiqueira, Luiz Felipe Machado Velho   +7 more
wiley   +1 more source

Production and preservation of archaeal glycerol dibiphytanyl glycerol tetraethers as intact polar lipids in marine sediments: Implications for their use in microbial ecology and TEX86 paleothermometry

, 2013
For climate modelling in order to predict climate change scenarios, it is important to consider past climate conditions and their impacts. The study of past climates, paleoclimatology, makes frequent use of molecular fossils, molecules that are preserved
Organic geochemistry & molecular biogeology, Lengger, S.K., Organic geochemistry   +2 more
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First Assessment of Genetic Damage in the Speckled Cockroach (Nauphoeta cinerea) After Consumption of Lettuce (Lactuca sativa) Cultivated and Commercialized in Northeastern, Brazil

Environmental 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, Eduardo Henrique da Silva Melo, Érima Maria de Amorim, Maria Gislaine Pereira, Claudia Rohde   +4 more
wiley   +1 more source

Biomarker evidence for nitrogen-fixing cyanobacterial blooms in a brackish surface layer in the Nile River plume during sapropel deposition [PDF]

, 2019
Sapropels are organic-rich sediment layers deposited in the eastern Mediterranean Sea during precession minima, resulting from an increase in export productivity and/or preservation.
Damsté, Jaap S.Sinninghe, Schouten, Stefan, Villareal, Tracy A., Organic geochemistry & molecular biogeology, Bale, Nicole J., Hopmans, Ellen C., Dorhout, Denise, Reichart, Gert-Jan, Hennekam, Rick, van der Meer, Marcel, Organic geochemistry, Stratigraphy and paleontology   +11 more
core   +1 more source

Nanomaterials' Multigenerational Effects by Single and Joint Exposure in Non‐mammalian Models

Environmental Toxicology, EarlyView.
ABSTRACT Nanotoxicology has mainly focused on single‐generation studies, leaving multigenerational toxicity underexplored. Having animal welfare recently gained importance, we aimed to provide the state‐of‐the‐art of knowledge about multigenerational effects in non‐mammalian models in the case of nanomaterials (NM) single and joint exposure to other ...
Andy Joel Taipe Huisa, Analía Ale, Azael Francisco Silva Neto, Lorena De Mendonça Lucena, Marcelo Estrella Josende, Milena Ferreira de Lima, Rhayanny Kethylly Pereira Santos, Martín Federico Desimone, Priscila Gubert, José María Monserrat   +9 more
wiley   +1 more source

Paleoenvironmental reconstructions in the Baltic Sea and Iberian margin: Assessment of GDGTs and long-chain alkenones in Holocene sedimentary records

, 2017
Increasing our knowledge about the global climate system will help society to mitigate anthropogenically induced global climate change and its impacts on the environment.
Organic geochemistry & molecular biogeology, Organic geochemistry, Warden, L.A.   +2 more
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