Results 31 to 40 of about 29,566 (262)

Five decades of N2 fixation research in the North Atlantic Ocean

Frontiers in Marine Science, 2015
Dinitrogen (N2) fixation (the reduction of atmospheric N2 to ammonium by specialized prokaryotic microbes), represents an important input of fixed nitrogen and contributes significantly to primary productivity in the oceans.
Mar eBenavides, Maren eVoss
doaj   +1 more source

Quantification of biological N₂ fixation of hedgerow trees in Northern Lampung [PDF]

NJAS: Wageningen Journal of Life Sciences, 2000
AbstractThe contribution of the leguminous hedgerow trees Flemingia congesta and mixed Gliricidia sepium — Peltophorum dasyrrachis established on an Ultisol (Grossarenic Kandiudult) in Northern Lampung, Sumatra to the N economy of the hedgerow intercropping system was assessed.
Hairiah, K., Van Noordwijk, M., Cadisch, G.   +2 more
openaire   +1 more source

Hydrides mediate nitrogen fixation

Cell Reports Physical Science, 2022
Summary: The fixation of atmospheric dinitrogen to ammonia is crucial for the sustainable growth of human society. The reduction of N2 to NH3 needs the inputs of electrons and hydrogens, which could be supplied by hydridic hydrogens. Hydrides are thus at
Qianru Wang, Yeqin Guan, Jianping Guo, Ping Chen   +3 more
doaj   +1 more source

Five‐Year Outcomes of Laparoscopic Sphincter‐Preserving Surgery for Rectal Cancer: A Prospective Study in Elderly Vietnamese Patients

Aging and Cancer, EarlyView.
This prospective study demonstrates that laparoscopic sphincter‐preserving surgery is feasible for elderly patients. While overall survival reaches 70% at 5 years, advanced T‐stage and the omission of neoadjuvant therapy significantly drive recurrence, highlighting the need for personalized geriatric protocols despite logistical challenges.
Huu Duc Ho, Quang Le, Ngoc Thach Tran, Van Viet Ung, Loc Vu   +4 more
wiley   +1 more source

Dissolved Organic Matter Influences N2 Fixation in the New Caledonian Lagoon (Western Tropical South Pacific)

Frontiers in Marine Science, 2018
Specialized prokaryotes performing biological dinitrogen (N2) fixation (“diazotrophs”) provide an important source of fixed nitrogen in oligotrophic marine ecosystems such as tropical and subtropical oceans. In these waters, cyanobacterial photosynthetic
Mar Benavides, Mar Benavides, Chloé Martias, Hila Elifantz, Ilana Berman-Frank, Cécile Dupouy, Sophie Bonnet   +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

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

3D Bioprinted Glioblastoma Multiforme Models: How the Extracellular Matrix Glycosignature Influences Drug Response

Advanced Functional Materials, EarlyView.
Aberrant glycosylation in the glioblastoma tumor microenvironment drives therapeutic resistance. Here, a 3D bioprinted model was engineered by incorporating α‐NeuNAc‐(2→3)‐β‐D‐Gal‐ and chondroitin sulfate. Combined multiplex immunofluorescence and synchrotron‐based nanoCT analysis revealed that glycan‐matrix interactions dictate specific drug‐escape ...
Francesca Cadamuro, Marco Piazzoni, Ilaria Borghi, Alberto Baeri, Alessandro Fumagalli, Federica Perillo, Hafiz Muhammad Fahad, Martina Ghizzi, Luca Crippa, Gabriella Nicolini, Angela Bentivegna, Daniele Ramazzotti, Valentina Zuliani, Mirko Rivara, Carlo Giorgio Giussani, Andrea Di Cristofori, Guido Cavaletti, Federica Facciotti, Sobhan Sheikhi, Claire Seydoux, Murielle Salome, Peter Cloetens, Alberto Bravin, Paola Coan, Francesco Nicotra, Laura Russo   +25 more
wiley   +1 more source

A LABORATORY EXERCISE TO ILLUSTRATE ASPECTS OF BIOLOGICAL N2 FIXATION TO PLANT SCIENCE STUDENTS

HortScience, 1993
A laboratory exercise on biological N 2 fixation (BNF) using two diverse legume species was developed. Students plant surface-sterilized seeds of Robinia pseudoacacia L.
William R. Graves, Lorna C. Wilkins
openaire   +1 more source

Quantitative analysis of amino acid excretion by Methanothermobacter marburgensis under N2-fixing conditions

Scientific Reports
Methanogenic archaea (methanogens) possess fascinating metabolic characteristics, such as the ability to fix molecular nitrogen (N2). Methanogens are of biotechnological importance due to the ability to produce methane (CH4) from molecular hydrogen (H2 ...
Barbara Reischl, Benjamin Schupp, Hayk Palabikyan, Barbara Steger-Mähnert, Christian Fink, Simon K.-M. R. Rittmann   +5 more
doaj   +1 more source