Results 301 to 310 of about 2,115,373 (378)

Long‐Term Active Rather than Passive Restoration Promotes Soil Organic Carbon Accumulation by Alleviating Microbial Nitrogen Limitation in an Extremely Degraded Alpine Grassland

open access: yesAdvanced Science, EarlyView.
Active restoration increases soil organic carbon stocks by reducing microbial nitrogen limitation. Nitrogen availability promotes particulate to mineral‐associated organic carbon conversion by reducing microbial carbon use efficiency. Passive restoration has no effect on soil organic carbon stocks.
Jinchao Gong   +15 more
wiley   +1 more source

O/C Ratio‐Driven Fluorescence Enhancement in Cellulose‐Derived Carbon Quantum Dots: Mechanistic Insights into Reaction Pathways

open access: yesAdvanced Science, EarlyView.
Three types of CQDs are prepared from cellulose and its derivatives via hydrothermal carbonization. An increase in the atomic O/C ratio from 0.25 to 0.61 results in a nearly seven‐fold enhancement in QY. DFT calculations verify this mechanism. Further, this study elucidates the formation pathways of cellulose‐derived CQDs and proposes a fluorescence ...
Yarong Shi   +7 more
wiley   +1 more source

Multiscale Design of Dental Restorative Materials: Mechanistic Foundations, Technological Innovations, and Clinical Translation

open access: yesAdvanced Science, EarlyView.
From conventional ceramics to bioinspired smart composites, this review charts the evolution of dental restorative biomaterials. Integrating materials innovation, advanced manufacturing technologies, and bioinspired strategies, it presents a roadmap for developing functional, clinically translatable restorations that combine durability, adaptability ...
Bailei Li   +14 more
wiley   +1 more source

All‐Round Talent: Unique Zinc Guanidine Catalyst Performs Efficiently in Synthesis and Chemical Recycling of (Bio)Polyesters

open access: yesAdvanced Science, EarlyView.
A new zinc hybrid guanidine catalyst [Zn{(R,R)TMGNMe2(1,2)ch}2](OTf)2 (C1) shows very high catalytic activity in the polymerization of cyclic esters and in the depolymerization of these polyesters. Using C1 in the ring‐opening polymerization of lactide and caprolactone under industrially relevant conditions, astonishing rate constants of the same order
Tabea Becker   +8 more
wiley   +1 more source

BIOMASS

open access: yes, 1981
openaire   +2 more sources

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