Results 61 to 70 of about 586,738 (280)

Reduction with zinc — Impact on the determination of nitrite and nitrate ions using microfluidic paper-based analytical devices

Talanta Open
We used a microfluidic paper-based analytical device (μPAD) to investigate the influence that zinc reduction exerts on the determination of nitrite and nitrate ions in natural water samples.
Mika I. Umeda, Kaewta Danchana, Takatoshi Fujii, Eiichi Hino, Yusuke Date, Kaoru Aoki, Takashi Kaneta   +6 more
doaj   +1 more source

Use of Nanoscale Zero-Valent Iron (NZVI) Particles for Chemical Denitrification under Different Operating Conditions

Metals, 2015
The nitrate pollution of waters and groundwaters is an important environmental and health concern. An interesting method to remove the oxidized forms of nitrogen from waters and wastewaters is chemical denitrification by means of metallic iron (Fe0 ...
Alessio Siciliano
doaj   +1 more source

Mobility and removal of nitrate in heterogeneous Eocene aquifers [PDF]

, 1998
n a study of the principles of lateral and vertical nitrate mobility and removal in unconfined heterogeneous fine sandy Eocene aquifers by long-term observation, no significant nitrate reduction could be observed over ...
Eppinger, Ralf, Walraevens, Kristine
core  

Dynamic modeling of nitrogen losses in river networks unravels the coupled effects of hydrological and biogeochemical processes [PDF]

, 2009
The importance of lotic systems as sinks for nitrogen inputs is well recognized. A fraction of nitrogen in streamflow is removed to the atmosphere via denitrification with the remainder exported in streamflow as nitrogen loads.
Alexander, Richard B., Bohlke, John Karl, Boyer, Elizabeth W., David, Mark B., Harvey, Judson W., Mulholland, Patrick J., Seitzinger, Sybil P., Tobias, Craig R., Tonitto, Christina, Wollheim, Wilfred M.   +9 more
core   +2 more sources

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source

Lattice hydrogen transfer in titanium hydride enhances electrocatalytic nitrate to ammonia conversion

Nature Communications
The electrocatalytic reduction of nitrate toward ammonia under mild conditions addresses many challenges of the Haber-Bosch reaction, providing a sustainable method for ammonia synthesis, yet it is limited by sluggish reduction kinetics and multiple ...
Jiawei Li, Wanqiang Yu, Haifeng Yuan, Yujie Wang, Yuke Chen, Di Jiang, Tong Wu, Kepeng Song, Xuchuan Jiang, Hong Liu, Riming Hu, Man Huang, Weijia Zhou   +12 more
doaj   +1 more source

Electrochemical Nitrate Reduction to Ammonia – Recent Progress

ChemElectroChem, 2023
The presence of nitrate in industrial, domestic and agricultural wastewater has a detrimental impact on both ecosystem and human health, as remediation and purification efforts are slow, challenging and difficult, given the high solubility and stability ...
Dr. Shanshan Niu, Dr. Ji Yang, Dr. Leilei Qian, Dan Zhou, Pan Du, Nan Si, Dr. Xiaomin Gu, Dawei Jiang, Yan Feng   +8 more
doaj   +1 more source

Application of electro-active biofilms [PDF]

, 2010
The concept of an electro-active biofilm (EAB) has recently emerged from a few studies that discovered that certain bacteria which form biofilms on conductive materials can achieve a direct electrochemical connection with the electrode surface using it ...
Dumas, Claire, Duţeanu, Narcis Mihai, Erable, Benjamin, Ghangrekar, Makarand Madhao, Scott, Keith   +4 more
core   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

FEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang, Grace Du, Charity Yongo‐Luwawa, Angelina Lu, Brett Kinrade, Kim Munro, Karl E. Klose, William D. Lubell, Peter Davies, Shuaiqi Guo   +9 more
wiley   +1 more source

Ampere-level reduction of pure nitrate by electron-deficient Ru with K+ ions repelling effect

Nature Communications
Electrochemical nitrate reduction reaction offers a sustainable and efficient pathway for ammonia synthesis. Maintaining satisfactory Faradaic efficiency for long-term nitrate reduction under ampere-level current density remains challenging due to the ...
Shi-Nan Zhang, Peng Gao, Qian-Yu Liu, Zhao Zhang, Bing-Liang Leng, Jie-Sheng Chen, Xin-Hao Li   +6 more
doaj   +1 more source