Results 61 to 70 of about 2,046,859 (296)

The Marine Organic Sulfur Cycle

open access: yesAnnual Review of Marine Science
Organic sulfur (OS) in the ocean is produced in vast quantities by primary producers that fix inorganic sulfate into proteins, metabolites, and other ubiquitous biomolecules. As biogenic OS is transported and transformed through the marine environment, it is joined by OS from two additional sources: abiogenic OS from sulfurization under anoxic ...
openaire   +2 more sources

Spatially Regulated Lithium Plating via Li2O‐Rich Interphase Enables Durable Fast‐Charging Hybrid Lithium Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A Li2O‐rich solid electrolyte interphase (SEI) is engineered on graphite through a propylene carbonate‐based electrolyte to spatially regulate Li plating. The homogeneous interphase lowers Li nucleation barriers, promotes conformal Li deposition around graphite particles, and suppresses dendritic accumulation, enabling durable hybrid Li‐ion/Li‐metal ...
Robert Kuphal   +8 more
wiley   +1 more source

System comparison study and on-farm trials on organic cotton in India [PDF]

open access: yes, 2009
Despite the high demand for sound data on the agronomic, ecological and economic performance of organic agriculture in developing countries, systematic comparison of organic and conventional farming systems has not so far been carried out.
Forster, Dionys
core   +1 more source

Balancing Hydrophobicity and Hydrophilicity: Dual Filler‐Engineered Proton Exchange Membranes for Durable, High‐Power Fuel Cells

open access: yesAdvanced Functional Materials, EarlyView.
Polarity‐matched Zr–MOFs program Nafion's nanoscale morphology during solution casting. Hydrophilic UiO‐66 preserves hydrated pathways, while hydrophobic UiO‐67 increases the proton hopping sites by densifying ionic clusters. Combining both fillers yields a membrane that delivers 176 mS cm−1 conductivity, reaches 1.46 W cm−2 under 200 kPa, and triples ...
Yonghwi Cho   +13 more
wiley   +1 more source

Study on the effects and mechanisms of different coal matrix structures on the desulfurization efficiency of Pseudomonas putida

open access: yesFrontiers in Microbiology
This study aims to reveal the influence mechanism of coal matrix structure on microbial desulfurization efficiency and clarify the regulatory effect of coal chemical structural characteristics on microbial desulfurization efficiency, providing ...
Chunming Ai   +4 more
doaj   +1 more source

Roots contribute more to refractory soil organic matter than above-ground crop residues, as revealed by a long-term field experiment [PDF]

open access: yes, 2011
We revisited the well documented and ongoing long-term 'Ultuna continuous soil organic matter field experiment' which started in 1956 at the Swedish University of Agricultural Sciences.
Andrén, Olof,   +15 more
core   +1 more source

Mechanical Programming of PEGDA‐β‐CD Polyrotaxane‐Based Hydrogels via Host–Guest Molecular Recognition

open access: yesAdvanced Functional Materials, EarlyView.
A mechanically programmable hydrogel for tissue engineering is developed by modulating the molecular threading density of poly(ethylene glycol) diacrylate‐β‐cyclodextrin (PEGDA‐β‐CD) polyrotaxane and combining it with β‐CD‐modified gelatin. The polyrotaxane‐guided transition from disordered pores to laminar microstructures enables precise tuning ...
Shiyi Chen   +10 more
wiley   +1 more source

Ashes for organic farming [PDF]

open access: yes, 2013
Nowadays only eight percent of the cultivated field area is used for organic farming. The Ministry of Agriculture and Forestry has published the guidelines for the program of organic farming to diversify the supply and the consumption of organic food ...
Peltonen, K.   +3 more
core   +1 more source

Novel and underutilized feed resources – potential for use in organic and low input dairy production [PDF]

open access: yes, 2012
This literature review evaluates the potential of a range of by-products from the agricultural,greenhouse, forestry, food processing and bioenergy sectors and agro-forestry systems as feed components in organic and low input dairy systems.
Kuoppala, Kaisa   +6 more
core  

Electrochemical Pathways for Nitrate Conversion to Ammonia: From Environmental Challenges to Ammonia Economy

open access: yesAdvanced Functional Materials, EarlyView.
This perspective presents recent advances in electrocatalytic nitrate reduction, focusing on reaction mechanisms, catalyst design, and electrolyzer configurations. Key challenges in selectivity, stability, and practical wastewater treatment are highlighted, while future directions for advancing sustainable ammonia synthesis and nitrate remediation are ...
Xintong Li   +9 more
wiley   +1 more source

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