Results 91 to 100 of about 586,823 (315)

2-Arylacetic anhydrides as ammonium enolate precursors

, 2014
This work is supported by funding from the Carnegie Trust for the Universities of Scotland and EPSRCReadily prepared 2-arylacetic anhydrides act as convenient ammonium enolate precursors in isothiourea (HBTM-2.1)-mediated catalytic asymmetric ...
Morrill, Louis C., Smith, Andrew D., Harper, Andrew D., Fallan, Charlene, Morrill, Louis, Bickel, Jasmine, Couturier, Jean-Philippe, Ledingham, Lyndsay A.   +7 more
core   +1 more source

Nitrogen removal in marine environments: recent findings and future research challenges [PDF]

, 2005
Respiratory reduction of nitrate (denitrification) is recognized as the most important process converting biologically available (fixed) nitrogen to N2. In current N cycle models, a major proportion of global marine denitrification (50–70%) is assumed to
Bo Thamdrup, Thamdrup, Bo, Donald E. Canfield, Gilbert, Franck, Dalsgaard, T, Thamdrup, B, Canfield, Donald E., Engström, Pia,, Dalsgaard, Tage, Kristina Sundbäck, Robert C. Aller, Hulth, Stefan, Sundb\ue4ck, Kristina, Engström, Pia, Tage Dalsgaard, Aller, R. C, Canfield, D. E, Franck Gilbert, Engstr\uf6m, Pia, Aller, Robert Curwood, Sundbäck, Kristina, Gilbert, F., Hulth, Stefan,, Stefan Hulth, Pia Engström, Sundbäck, Kristina,   +25 more
core   +1 more source

Deposition and Transformation of Nitrogen after Soil Fumigation with Ethanedinitrile

HortScience, 2020
A novel methyl bromide alternative, ethanedinitrile (EDN), has been reported to be efficacious against soil-borne pathogens, weeds, and plant-parasitic nematodes.
Mary C. Stevens, Rui Yang, Joshua H. Freeman   +2 more
doaj   +1 more source

Speckle‐Engineered Upconversion Amplification in Nanoemulsion‐Templated Hydrogel Microdomes

Advanced Functional Materials, EarlyView.
Nanoemulsion‐confined PEGDA microdomes generate speckle‐like excitation fields that strongly amplify upconversion luminescence upon dehydration, enabling filter‐free visible readout with reversible on–off switching. DMD‐based lithography yields scalable, shape‐programmable arrays for moisture‐responsive displays and optical encryption.
Chaeyeong Ryu, Byungcheon Yoo, Seunghun Lee, Hyungyo Jeong, Sanggyun Jeong, Heesu Cho, Jongwon Oh, Dahye Baek, Jongkyu Kim, Yubin Lee, Eunsu Gu, Dong‐Hwan Kim, Jung‐Hoon Park, Jiseok Lee   +13 more
wiley   +1 more source

Carboxylates and the uptake of ammonium by excised maize roots

, 1975
The effect of carboxylates (organic acid anions) on NH 4 uptake was studied by changing the carboxylate level of roots prior to uptake experi ments. Succinate was the most effective stimulator of ammonium uptake.
Breteler, H.
core  

Asymmetric isothiourea-catalysed formal [3+2] cycloadditions of ammonium enolates with oxaziridines [PDF]

, 2015
The authors thank the Royal Society for a University Research Fellowship (A.D.S.) and the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007—2013), ERC Grant Agreement No. 279850 (C.F.
McLennan, Ross, Taylor, James E., Taylor, James Edward, McLennan, Ross Sinclair, Smith, Siobhan R., Morrill, Louis Christian, Daniels, David Sydney Bernard, Smith, Siobhan Rose, Slawin, Alexandra Martha Zoya, Morrill, Louis C., Smith, Andrew D., Daniels, David S. B., Fallan, Charlene, Smith, Andrew David, Slawin, Alexandra M. Z.   +14 more
core   +1 more source

Mixed nitrogen forms enhance growth and photosynthetic nitrogen use efficiency by optimizing nitrogen metabolism and leaf N allocation in Gisela 6 cherry rootstock

Frontiers in Plant Science
Nitrogen (N) is the most important nutrient for plant growth and development. However, the mechanisms by which the form and supply of N regulate the growth and N utilization of cherry rootstock are unclear at present.
Xinxiang Xu, Yan Tang, Liu He, Yanxia Sun, Daliang Liu, Yuxia Wang, Fangdong Li, Lingling Zhao, Laiqing Song, Fen Wang, Yanju Li, Xu Zhang   +11 more
doaj   +1 more source

Multiplex Modular Nanorobotic Systems with Catalytic Activity under Magnetic Navigation

Advanced Functional Materials, EarlyView.
We present modular nanorobots composed of a magnetic propulsion module and different extension modules carrying functional activities, assembled via DNA base pairing. The system integrates propulsion, optical tracking, enzymatic catalysis, and cell docking in a programmable manner.
Voichita Mihali, Xinan Huang, Lucie Motyckova, Nicolas Moreno Gomez, Michal Skowicki, Cora‐Ann Schoenenberger, Peer Fischer, Cornelia G. Palivan   +7 more
wiley   +1 more source

Role of electronic structure on nitrate reduction to ammonium: a periodic journey

, 2022
Electrocatalytic reduction of waste nitrate to ammonium provides a circular process with reduced carbon dioxide emissions compared to current nitrate treatment and ammonia production processes. However, electrocatalysts require a delicate balance between
Kelsey A., Stoerzinger, Rylee, Marks, O. Quinn, Carvalho, Selena C., Martinez, Liney, Arnadottir, Hoan K.K., Nguyen, Molly E., Vitale-Sullivan   +6 more
core   +1 more source

RESEARCH AND MODELLING KINETICS ION EXCHANGE INTERACTIONS

Environmental Problems
In detail, this study analysed the kinetics of ammonium ion adsorption under dynamic conditions in the ―clinoptilolite -ammonium ion system.
Vira Sabadash, Yaroslav Gumnitsky, Oleh Konovalov   +2 more
doaj   +1 more source