Results 51 to 60 of about 42,369 (272)

Methanogenesis in Big Soda Lake, Nevada: an Alkaline, Moderately Hypersaline Desert Lake [PDF]

open access: yesApplied and Environmental Microbiology, 1982
Incubated sediment slurries from Big Soda Lake, Nevada, produced significant levels of CH 4 , and production was inhibited by 2-bromoethanesulfonic acid and by autoclaving. Methane production was stimulated by methanol, trimethylamine, and, to a lesser extent, methionine. Surprisingly, hydrogen, acetate, and formate
R S, Oremland, L, Marsh, D J, Desmarais
openaire   +2 more sources

Studying Africa's hydroclimate history over the last 2000 years [PDF]

open access: yes, 2016
Water-resource availability is one of the most important environmental factors on which Africa’s agricultural societies are reliant. However, our knowledge of the natural background variability of rainfall and drought over Africa is currently still ...
De Cort, Gijs
core   +2 more sources

A metagenomics roadmap to the uncultured genome diversity in hypersaline soda lake sediments

open access: yesMicrobiome, 2018
Background Hypersaline soda lakes are characterized by extreme high soluble carbonate alkalinity. Despite the high pH and salt content, highly diverse microbial communities are known to be present in soda lake brines but the microbiome of soda lake ...
Charlotte D. Vavourakis   +5 more
doaj   +1 more source

High concentrations of dissolved biogenic methane associated with cyanobacterial blooms in East African lake surface water

open access: yesCommunications Biology, 2021
Fazi et al. report on an extraordinarily high biogenic methane concentration detected in the surface water of Lake Sonachi, Kenya. Using gas chromatography and microbiome profiling, they determine that these high concentrations are associated with ...
Stefano Fazi   +16 more
doaj   +1 more source

Release of CO2 and CH4 from lakes and drainage ditches in temperate wetlands [PDF]

open access: yes, 2010
Shallow fresh water bodies in peat areas are important contributors to greenhouse gas fluxes to the atmosphere. In this study we determined the magnitude of CH4 and CO2 fluxes from 12 water bodies in Dutch wetlands during the summer season and studied ...
Berendse, F.   +4 more
core   +6 more sources

Controls on Cyclic Formation of Quaternary Early Diagenetic Dolomite [PDF]

open access: yes, 2018
The origin of sedimentary dolomite and the factors that control its formation within the geological record remain speculative. In most models, dolomite formation is linked to evaporative conditions, high water temperature, increasing Mg/Ca ratio ...
Bontognali, T. R. R.   +3 more
core   +2 more sources

Halophiles and Their Biomolecules: Recent Advances and Future Applications in Biomedicine [PDF]

open access: yes, 2020
The organisms thriving under extreme conditions better than any other organism living on Earth, fascinate by their hostile growing parameters, physiological features, and their production of valuable bioactive metabolites.
Amoozegar, Mohammad Ali   +2 more
core   +1 more source

Characterization of an Injectable Poly(vinyl alcohol)‐gelatin Hydrogel for Growth Factor Delivery in an Orthopedic Application

open access: yesAdvanced Healthcare Materials, EarlyView.
This work introduces photo‐crosslinkable tyraminated poly(vinyl alcohol)‐gelatin (PVA‐GT) hydrogels as tunable injectable platforms for tissue engineering and growth factor delivery applications. This schematic illustrates the two developed hydrogel formulations and the experimental workflow used to evaluate their physico‐chemical properties in vitro ...
Alessia Longoni   +15 more
wiley   +1 more source

Alkaline protease from a new halotolerant alkaliphilic Bacillus agaradhaerens strain ak-r isolated from egyptian soda lakes

open access: yesBioscience Journal, 2016
Alkaline proteases are hydrolytic enzymes that cleave peptide bonds in proteins and peptides in alkaline conditions, which occupy a pivotal importance with respect to their industrial applications.
Abdelnasser Salah Shebl Ibrahim   +5 more
doaj   +3 more sources

Elastomeric Micro‐Balloons for Remote Control of Cerebral Blood Flow and Real‐Time In vivo Imaging of Rodent Brain Response to Hypoperfusion

open access: yesAdvanced Materials, EarlyView.
This study reports the fabrication of MRI‐compatible elastomeric micro‐balloons via a multi‐step bubble casting process, where the monolithic elastomeric wall is selectively stiffened for reversible and controlled inflation and elasticity, depending on the target vessels for graded occlusion of cerebral arteries.
Jong Bin Kim   +10 more
wiley   +1 more source

Home - About - Disclaimer - Privacy