Results 111 to 120 of about 549,109 (310)

EURO-ECOLE: Assessment of the Bioavailability and Potential Ecological Effects of Copper in European Surface Waters ; subproject 4: Evaluation and improvement of the ecological relevance of laboratory generated toxicity data [PDF]

open access: yes, 2002
This report summarizes the acute and chronic toxicity of copper to algae, Daphnia and a few other freshwater species in standard laboratory test water and a wide range of natural surface waters (collected across Europe), with a wide range of pH ...
Bossuyt, Bart   +2 more
core  

Uncovering the Neoproterozoic Carbon Cycle [PDF]

open access: yes, 2014
Interpretations of major climatic and biological events in Earth history are, in large part, derived from the stable carbon isotope records of carbonate rocks and sedimentary organic matter1,2.
Gill, B   +4 more
core   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger   +10 more
wiley   +1 more source

Raw liquid waste treatment process [PDF]

open access: yes, 1980
A raw sewage treatment process is disclosed in which substantially all the non-dissolved matter, which is suspended in the sewage water is first separated from the water, in which at least organic matter is dissolved.
Humphrey, Marshall F.
core   +1 more source

Distribution of carbon in a tropical hypersaline estuary, the Casamance (Senegal, West Africa) [PDF]

open access: yes, 1995
The Casamance estuary, on the coast of Senegal, is an inverse hypersaline estuary : salinity increases landward, and dry season salinity values are up to 172 psu due to the evaporation of seawater.
Lemoalle, Jacques, Pagès, Jean
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

The biogeochemistry of carbon across a gradient of streams and rivers within the Congo Basin [PDF]

open access: yes, 2014
Dissolved organic carbon (DOC) and inorganic carbon (DIC and pCO2), lignin biomarkers and the optical properties of dissolved organic matter (DOM) were measured in a gradient of streams and rivers within the Congo Basin (Republic of Congo), with the aim ...
Aerts   +66 more
core   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

open access: yesAdvanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein   +4 more
wiley   +1 more source

Quantifying dissolved black carbon in fire-affected estuaries: a case study from the 2019–2020 Australian bushfires

open access: yesFrontiers in Water
Changing fire regimes, marked by more intense, extensive, and catastrophic wildfires are predicted to lead to significant shifts in carbon cycling along the land-ocean-aquatic-continuum (LOAC).
Dylan Laicher-Edwards   +7 more
doaj   +1 more source

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