Results 41 to 50 of about 506,022 (305)

25th European Nitrogen Cycle Meeting: from molecules to climate change

, 2022
The European Nitrogen Cycle meeting is an annual event, bringing together many research groups in Europe with long-lasting and complementary expertise on several aspects of this ecological cycle and its implication for humans (https://enc2022.azuleon.org/
David Richardson, Gary Rowley, Chiara Di Lucente, Francesca Cutruzzola, Serena Rinaldo   +4 more
core  

Microbial nitrogen cycling on the Greenland Ice Sheet [PDF]

, 2012
Nitrogen inputs and microbial nitrogen cycling were investigated along a 79 km transect into the Greenland Ice Sheet (GrIS) during the main ablation season in summer 2010. The depletion of dissolved nitrate and production of ammonium (relative to icemelt)
J. Telling, C. Bellas, Wadham, J.L., Hodson, A, I. Nias, Wadham, Jemma L, Tranter, Martyn, J. Cook, M. Stibal, Telling, J., Bellas, Christopher M, A. Hodson, A. M. Anesio, Hodson, A., Cook, J, Sole, A, G. Lis, Nias, Isabel, Tranter, M., Lis, G., Stibal, M, P. Nienow, Anesio, A.M., Stibal, Marek, Nienow, P, Anesio, A. M., Cook, J., Tranter, M, Anesio, Alexandre M, Stibal, M., Telling, J, Bellas, C, Bellas, C., Wadham, JL, Telling, Jon P, Anesio, AM, M. Tranter, Lis, G, Sole, A., Cook, Joe, J. L. Wadham, A. Sole, Wadham, J. L., Nias, I, Nias, I., Nienow, P.   +45 more
core   +1 more source

Nitrogen: from discovery, plant assimilation, sustainable usage to current enhanced efficiency fertilizers technologies – A review [PDF]

Revista Brasileira de Ciência do Solo
From 1913 onwards, the global situation changed from a scenario of nitrogen (N) scarcity to an abundance of ammonia (NH3) produced synthetically via the Haber-Bosch process.
Bruno Maia Abdo Rahmen Cassim, Izaias Pinheiro Lisboa, Marcos Renan Besen, Rafael Otto, Heitor Cantarella, Tadeu Takeyoshi Inoue, Marcelo Augusto Batista   +6 more
doaj   +1 more source

Polyester microplastic fibers in soil increase nitrogen loss via leaching and decrease plant biomass production and N uptake

Environmental Research Letters, 2022
Microplastic contamination, like other global change factors, can induce effects on ecosystem functions and processes, affecting various soil biophysical properties.
Rosolino Ingraffia, Gaetano Amato, Massimo Iovino, Matthias C Rillig, Dario Giambalvo, Alfonso S Frenda   +5 more
doaj   +1 more source

Nitric Oxide Isotopic Analyzer Based on a Compact Dual-Modulation Faraday Rotation Spectrometer

Sensors, 2015
We have developed a transportable spectroscopic nitrogen isotopic analyzer. The spectrometer is based on dual-modulation Faraday rotation spectroscopy of nitric oxide isotopologues with near shot-noise limited performance and baseline-free operation ...
Eric Zhang, Stacey Huang, Qixing Ji, Michael Silvernagel, Yin Wang, Bess Ward, Daniel Sigman, Gerard Wysocki   +7 more
doaj   +1 more source

Distribution of Dissolved Nitrogen Compounds in the Water Column of a Meromictic Subarctic Lake

Nitrogen, 2021
In order to better understand the biogeochemical cycle of nitrogen in meromictic lakes, which can serve as a model for past aquatic environments, we measured dissolved concentrations of nitrate, nitrite, ammonium, and organic nitrogen in the deep (39 m ...
Taisiya Ya. Vorobyeva, Anna A. Chupakova, Artem V. Chupakov, Svetlana A. Zabelina, Olga Y. Moreva, Oleg S. Pokrovsky   +5 more
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

The nitrogen cycle in long-term field experiments

, 1982
Nitrogen balance sheets for the Rothamsted Continuous Wheat Experiment show that N fertilizers were used very inefficiently in the past. Thus, over the period 1852-1967, the apparent recovery (in grain and straw) of the fertilizer N applied to the plot ...
Jenkinson, D. S.
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

FEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source