Results 71 to 80 of about 1,203,480 (356)

Paysages et problèmes du haut-bassin de l'Argens au cœur de la Provence Verte (Var occidental)

open access: yesPhysio-Géo, 2017
The Argens upper watershed, upstream to the Valley Sourn gorges, is rich in remarkable travertine deposits: active waterfalls on Argens and old sites of Varages and Barjols.
Jean Nicod
doaj   +1 more source

Bacterial Cellulose Production from Industrial Waste and by-Product Streams

open access: yesInternational Journal of Molecular Sciences, 2015
The utilization of fermentation media derived from waste and by-product streams from biodiesel and confectionery industries could lead to highly efficient production of bacterial cellulose.
Erminda Tsouko   +8 more
semanticscholar   +1 more source

Removal of Steroid Hormone Micropollutants by an Electrochemical Carbon Nanotube Membrane Flow‐Through Reactor: Role of Concentration and Degradation Mechanisms

open access: yesAdvanced Functional Materials, EarlyView.
A flow‐through electrochemical membrane reactor equipped with a carbon nanotube membrane eliminates the mass transfer limitation, achieving removals >97.5% for steroid hormone (SH) micropollutants through electrochemical adsorption and degradation, over a broad initial concentration varying from 50 to 106 ng L−1.
Siqi Liu   +2 more
wiley   +1 more source

CO2 Reduction on Copper‐Nitrogen‐Doped Carbon Catalysts Tuned by Pulsed Potential Electrolysis: Effect of Pulse Potential

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates that pulsed potential electrolysis significantly improves CO2 reduction performance on copper‐nitrogen doped carbon electrodes. The formation of cationic copper sites and metallic clusters as a function of applied intermittent potential leads to notable selectivity changes compared to potentiostatic reduction.
Dorottya Hursán   +13 more
wiley   +1 more source

GROWTH, MORTALITY AND PRODUCTION OF BROWN AND RAINBOW TROUT IN NEW MEXICO STREAMS [PDF]

open access: yesCroatian Journal of Fisheries, 1995
Thirty-two representative trout sites in 15 high elevation New Mexico streams (1,661 - 2560 m above sea level) were sampled in 1988 and 1989. Fish was captured by consecutive removal via electrofishing in net-blocked segments from 65 to 160 m long ...
S Leiner
doaj  

Macrophytes of the Capitão Poço river micro-basin, State of Pará, Eastern Amazon, Brazil: floristic composition and identification key for the species [PDF]

open access: yesHoehnea
We aimed to characterize the floristic composition, detect the life forms, and provide an identification key for the macrophyte species of the Capitão Poço river micro-basin in the State of Pará, located in the Eastern Amazon.
Lucimar Silva Carvalho   +3 more
doaj   +1 more source

Boosting the Energy Density of “Anode‐Free” Lithium Metal Batteries via Electrospun Polymeric Scaffolds

open access: yesAdvanced Functional Materials, EarlyView.
While host structures are known to enhance the reversibility and safety of lithium metal deposition, their additional volume and weight often decrease the battery's energy density and specific energy. By combining a lightweight and porous scaffold of electrospun polymer with a thinner separator, this article demonstrates a simultaneous improvement of ...
Lennart Wichmann   +6 more
wiley   +1 more source

Does the habitat structure control the distribution and diversity of the Odonatofauna?

open access: yesBrazilian Journal of Biology
The statement that the habitat complexity and structure govern the abundance and diversity of biological communities has been widely investigated. In this context, we assumed the hypothesis of habitat heterogeneity, that is, the higher habitat complexity
AM Souza   +3 more
doaj   +1 more source

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