Results 31 to 40 of about 47,873 (213)

Diazotrophs and N2-Fixation Associated With Particles in Coastal Estuarine Waters

Frontiers in Microbiology, 2018
Putative heterotrophic bacteria carrying out N2-fixation, so-called non-cyanobacterial diazotrophs (NCDs), are widely distributed in marine waters, but details of how the O2-inhibited N2-fixation process is promoted in the oxic water column remains ...
Jeppe N. Pedersen, Deniz Bombar, Ryan W. Paerl, Lasse Riemann   +3 more
doaj   +1 more source

Transparent Deformable Thin Film Electric Heater for Stable and Accurate Control of High Temperatures

Advanced Functional Materials, EarlyView.
Au/GaOx‐based transparent heaters combine high optical transmittance and low sheet resistance with exceptional thermal stability up to 521°C for over 6 h. The interfacial GaOx layer suppresses dewetting of Au and enhances adhesion, ensuring mechanical robustness during deformation and reliability for real‐world applications including grilling ...
Younghyun Lee, Huisim Moon, Yeongseo Jin, Woosung Cho, Geonwoo Kim, Gihyeok Eom, Michael D. Dickey, Minsik Kong, Unyong Jeong   +8 more
wiley   +1 more source

The Transcriptional Cycle Is Suited to Daytime N₂ Fixation in the Unicellular Cyanobacterium “Candidatus Atelocyanobacterium thalassa” (UCYN-A)

mBio, 2019
Symbiosis between a marine alga and a N2-fixing cyanobacterium (Cyanobacterium UCYN-A) is geographically widespread in the oceans and is important in the marine N cycle. UCYN-A is uncultivated and is an unusual unicellular cyanobacterium because it lacks
María del Carmen Muñoz-Marín, Irina N. Shilova, Tuo Shi, Hanna Farnelid, Ana María Cabello, Jonathan P. Zehr   +5 more
doaj   +1 more source

Magnesium‐Based Transient Bioelectronics, Bio‐Optics and Bio‐Scaffolds

Advanced Functional Materials, EarlyView.
This paper reviews the state of the art and recent advances in magnesium‐based thin‐film, foils, and scaffolds for applications in transient bio‐optics, bioelectronics and tissue engineering. The design principles, fabrication methods, material properties, and integration strategies are discussed in detail.
Massimo Mariello, Yves Leterrier
wiley   +1 more source

A global dataset of nitrogen fixation rates across inland and coastal waters

Limnology and Oceanography Letters
Biological nitrogen fixation is the conversion of dinitrogen (N2) gas into bioavailable nitrogen by microorganisms with consequences for primary production, ecosystem function, and global climate.
Robinson W. Fulweiler, Megan E. Berberich, Shelby A. Rinehart, Jason M. Taylor, Michelle C. Kelly, Nicholas E. Ray, Autumn Oczkowski, Sawyer J. Balint, Alexandra H. Geisser, Catherine R. Mahoney, Mar Benavides, Matthew J. Church, Brianna Loeks, Silvia E. Newell, Malin Olofsson, Jimmy C. Oppong, Sarah S. Roley, Carmella Vizza, Samuel T. Wilson, Peter M. Groffman, J. Thad Scott, Amy M. Marcarelli   +21 more
doaj   +1 more source

The contamination of commercial 15N2 gas stocks with 15N-labeled nitrate and ammonium and consequences for nitrogen fixation measurements. [PDF]

PLoS ONE, 2014
We report on the contamination of commercial 15-nitrogen (15N) N2 gas stocks with 15N-enriched ammonium, nitrate and/or nitrite, and nitrous oxide. 15N2 gas is used to estimate N2 fixation rates from incubations of environmental samples by monitoring the
Richard Dabundo, Moritz F Lehmann, Lija Treibergs, Craig R Tobias, Mark A Altabet, Pia H Moisander, Julie Granger   +6 more
doaj   +1 more source

Bismuth‐Based Photocatalysts for Water Remediation: Design Strategies, Mechanisms, and Challenges

Advanced Functional Materials, EarlyView.
This review highlights representative design strategies for bismuth‐based semiconductor photocatalysts in solar‐driven water purification. Emphasis is placed on electronic structure regulation, oxygen‐vacancy engineering, and interfacial coupling to enable efficient full‐spectrum light utilization, improved charge separation, and selective oxidation in
Shan Liu, Yi Zhao, Liming Cai, Simin Long, Jing Kang, Jingkai Lin, Jimin Shen, Zhonglin Chen, Shaobin Wang, Huayang Zhang   +9 more
wiley   +1 more source

Assessing N2 fixation flux and its controlling factors in the (sub)tropical western North Pacific through high‐resolution observations

Limnology and Oceanography Letters
The (sub)tropical western North Pacific is potentially an area of intense nitrogen (N2) fixation in the global ocean, despite limited understanding of the flux and controlling factors.
Xinran Yu, Zuozhu Wen, Ruotong Jiang, Jin‐Yu Terence Yang, Zhimian Cao, Haizheng Hong, Yuntao Zhou, Dalin Shi   +7 more
doaj   +1 more source

Ultrafast Thermal Shock Synthesis of CuNiSnLa Medium‐Entropy Metallic Glass for Sustainable Nitrogen Fixation via Plasma‐Coupled Electrocatalysis

Advanced Functional Materials, EarlyView.
This work introduces an ultrafast thermal shock strategy to synthesize a CuNiSnLa medium‐entropy metallic glass (MEMG). The rapid heating and cooling process generates a robust, highly active catalyst for electrocatalytic nitrate reduction to ammonia (NRA).
Hongbo Chen, Peng‐Jun Deng, Yang Liu, Shenglong Huang, Shuo Sun, Haoxuan Li, Jiajia Lu, Panagiotis Tsiakaras   +7 more
wiley   +1 more source

Quantifying N2 fixation and its contribution to export production near the Tonga-Kermadec Arc using nitrogen isotope budgets

Frontiers in Marine Science, 2023
The spatial distribution of marine di-nitrogen (N2) fixation informs our understanding of the sensitivities of this process as well as the potential for this new nitrogen (N) source to drive export production, influencing the global carbon (C) cycle and ...
Heather J. Forrer, Sophie Bonnet, Rachel K. Thomas, Olivier Grosso, Cecile Guieu, Angela N. Knapp   +5 more
doaj   +1 more source