Results 131 to 140 of about 236,141 (302)

Glacially derived iron is more bioavailable to Antarctic phytoplankton than other sources

Communications Earth & Environment
The bioavailability of iron from different sources to phytoplankton, driving substantial carbon dioxide uptake of the large blooms downstream of South Georgia Island, remains unknown.
Jasmin Stimpfle, Florian Koch, Berenice Ebner, Christian Völkner, Rebecca Zitoun, Camila F. Sukekava, Sylvia G. Sander, Susann Henkel, Randelle M. Bundy, Angel Ruacho, Sabine Kasten, Scarlett Trimborn   +11 more
doaj   +1 more source

Robust C–C bonded porous networks with chemically designed functionalities for improved CO2 capture from flue gas

Beilstein Journal of Organic Chemistry, 2016
Effective carbon dioxide (CO2) capture requires solid, porous sorbents with chemically and thermally stable frameworks. Herein, we report two new carbon–carbon bonded porous networks that were synthesized through metal-free Knoevenagel nitrile–aldol ...
Damien Thirion, Joo S. Lee, Ercan Özdemir, Cafer T. Yavuz   +3 more
doaj   +1 more source

Intrinsic Coordination Architecture Governing Selectivity Divergence Between Extended and Single‐Site Electrocatalysts

Advanced Materials, EarlyView.
Catalyst coordination acts as a loaded dice biasing reaction selectivity. Single‐atom site catalysts lock intermediates in exposed configurations, enabling continued hydrogenation and favoring oxygen‐retaining products. In contrast, extended metal surfaces fully coordinate and shield reactive centers, promoting deoxygenation pathways. This work reveals
Chengyi Zhang, Ziyun Wang
wiley   +1 more source

FFP2 induced breathing resistance does not affect metabolism and well-being during brisk walking and stair climbing - a randomized controlled trial

Journal of Occupational Medicine and Toxicology
Objectives N95 or Type II filtering face pieces (FFP2) are often worn during work hours or on public transportation to prevent airborne infection. The aim of this randomized controlled crossover study is to assess the impact of FFP2 induced breathing ...
Tobias Engeroff, Niclas Hartel, Daniel Niederer, Albert Nienhaus, David A. Groneberg, Lutz Vogt   +5 more
doaj   +1 more source

A Van-Der-Waals picture for metabolic networks from MaxEnt modeling: inherent bistability and elusive coexistence

, 2017
In this work maximum entropy distributions in the space of steady states of metabolic networks are defined upon constraining the first and second moment of the growth rate. Inherent bistability of fast and slow phenotypes, akin to a Van-Der Waals picture,
De Martino, Daniele
core   +1 more source

Integrating ZnO/Ag2O@g‐C3N4‐Based Nanocomposites Into a Carrageenan Matrix to Efficiently Remove Heavy Metals From Water

Advanced Materials Interfaces, EarlyView.
ABSTRACT This research focused on characterizing graphitic carbon nitride (g‐C3N4) nanocomposites incorporated with ZnO and Ag2O nanoparticles, and carrageenan to remove heavy metals. The ZnO/Ag2O@ g‐C3N4 and ZnO/Ag2O/g‐C3N4@Carr nanocomposites demonstrated thermal stability of 97.40% (108.81°C) and 82.80% (188.99°C) for TGA.
Feziwe B. Mamba, Bhekani S. Mbuli, James Ramontja   +2 more
wiley   +1 more source

Ethylenediamine loading into a manganese-based metal-organic framework enhances water stability and carbon dioxide uptake of the framework. [PDF]

R Soc Open Sci, 2020
Asghar A, Iqbal N, Aftab L, Noor T, Kariuki BM, Kidwell L, Easun TL.   +6 more
europepmc   +1 more source

Exploring the Potential of Zero‐Dimensional Carbon Nanomaterials in Photoluminescent, Electrochemiluminescent and Electrochemical Sensors

Advanced Materials Interfaces, EarlyView.
Zero‐dimensional carbon nanomaterials are presented as multifunctional platforms linking structure, property, and sensing performance. Surface engineering and heteroatom doping modulate electron‐transfer and luminescent behavior, enabling electrochemical, photoluminescent, and electrochemiluminescent detection. Fundamental design principles, analytical
Gustavo Martins, Jeferson Luiz Gogola, Ava Gevaerd, Cristiane Kalinke, Paulo Roberto de Oliveira, Fabio Roberto Caetano, Bruno Campos Janegitz, Márcio Fernando Bergamini, Luiz Humberto Marcolino‐Junior   +8 more
wiley   +1 more source

Augmenting the Carbon Dioxide Uptake and Selectivity of Metal-Organic Frameworks by Metal Substitution: Molecular Simulations of LMOF-202. [PDF]

ACS Omega, 2020
Agrawal A, Agrawal M, Suh D, Fei S, Alizadeh A, Ma Y, Matsuda R, Hsu WL, Daiguji H.   +8 more
europepmc   +1 more source

Solar-driven carbon dioxide fixation using photosynthetic semiconductor bio-hybrids. [PDF]

, 2019
Solar-driven conversion of carbon dioxide to value-added carbon products is an ambitious objective of ongoing research efforts. However, high overpotential, low selectivity and poor CO2 mass transfer plague purely inorganic electrocatalysts.
Cestellos-Blanco, Stefano, Yang, Peidong, Zhang, Hao   +2 more
core   +1 more source