Results 81 to 90 of about 654,161 (169)

Global Sensitivity Analysis of a Reactive Transport Model for Abiotic Trichloroethylene Reduction by Reduced Iron Minerals in Clay‐Rich Aquitards

open access: yesWater Resources Research, Volume 62, Issue 9, September 2026.
Abstract Back‐diffusion of trichloroethylene (TCE) from clay‐rich aquitards poses a persistent challenge to groundwater remediation at many contaminated sites. Previous studies have demonstrated that natural attenuation of TCE is controlled by abiotic reactions with reactive ferrous iron; however, the coupled roles of mineral inventory, mineral ...
G. Kumar   +4 more
wiley   +1 more source

Long-term performance of a plant microbial fuel cell with Spartina anglica [PDF]

open access: yes, 2010
The plant microbial fuel cell is a sustainable and renewable way of electricity production. The plant is integrated in the anode of the microbial fuel cell which consists of a bed of graphite granules.
David P. B. T. B. Strik   +7 more
core   +1 more source

Biochemical indicators of soil fertility in vineyards with different conservative management systems

open access: yesBIO Web of Conferences, 2019
Biochemical parameters are particularly suited to evaluate soil fertility because soil microorganisms play a pivotal role in determining soil quality and functionand are very sensitive to changes in soil management and environmental conditions.
Mondini Claudio   +3 more
doaj   +1 more source

Occurrence of Food Chemical Contaminants in Entomophagy: Implications for Food Safety and Future Risk Assessment—A Scoping Review

open access: yesComprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 5, September 2026.
ABSTRACT Entomophagy is increasingly recognized as a sustainable alternative to conventional protein sources due to its low environmental impact. However, ensuring its safety requires careful evaluation of chemical contaminants of food safety concern.
Marta Esgalhado   +9 more
wiley   +1 more source

Global pattern and controls of soil microbial metabolic quotient

open access: yes, 2021
imbalanceThe microbial metabolic quotient (MMQ), microbial respiration per unit of biomass, is a fundamental factor controlling heterotrophic respiration, the largest carbon flux in soils.
Zhang, Xiaochun   +9 more
core  

Soil biological quantity and quality parameters of grasslands in various landscape zones

open access: yesPlant, Soil and Environment, 2011
In three landscape zones of a permanent grassland catchment (discharge zone, D; transient zone, T; and recharge zone, R; Crystallinicum, Czech Republic), soil moisture by volume (θ) and soil biological quantity and quality parameters, e.g.
R. Duffková, H. Macurová
doaj   +1 more source

Influence of Cellulose Particles on Streptomyces spp. Growth, Morphology, and Metabolite Spectrum

open access: yesMicrobial Biotechnology, Volume 19, Issue 9, September 2026.
Cellulose particles reduce pellet size and alter morphology in 13 Streptomyces spp., but induce species‐dependent metabolic responses that frequently decrease natural product production. Cellulose‐associated mechanical stress disrupts the relationship between biosynthetic potential and metabolite output, leading to stress‐associated metabolomic shifts ...
Dorothea M. Schütterle   +9 more
wiley   +1 more source

Towards a collective understanding of fraction as quotient and a deeper mathematical knowledge for teaching [PDF]

open access: yes
Research conducted in many countries has shown that teaching and learning fractions is a challenge for students and teachers (Cramer et al., 2002; Kieran, 1976; Lamon, 2007; Moss & Case, 1999; Tian & Siegler, 2018; Van Steenbrugge et al., 2014).
Sidwall, Jillian
core  

Contamination and Soil Biological Properties in the Serra Pelada Mine - Amazonia, Brazil

open access: yesRevista Brasileira de Ciência do Solo, 2018
Discovered in 1980 and unleashed an utter gold rush of the modern era, Serra Pelada was the largest open-air mine in Brazil. About 80,000 gold prospectors worked there until 1984, when the gold pits were flooded. The environmental impact caused by mining
Renato Alves Teixeira   +4 more
doaj   +1 more source

Oxygenaging: A Physiological Framework for Geroscience

open access: yesAging Cell, Volume 25, Issue 9, September 2026.
Mechanisms of aging disrupt oxygen homeostasis through three converging processes: oxygen‐cascade impairment, microvascular dysfunction, and molecular maladaptation. “Oxygenaging” integrates these domains to explain how declining oxygen delivery and utilization drive mitochondrial instability and amplify the effect of the hallmarks of aging.
Stefano Donega   +6 more
wiley   +1 more source

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