Results 71 to 80 of about 210,845 (301)

Oxidation of Ammonia with Molecular Complexes

Journal of the American Chemical Society, 2020
Oxidation of ammonia by molecular complexes is a burgeoning area of research, with critical scientific challenges that must be addressed. A fundamental understanding of individual reaction steps is needed, particularly for cleavage of N-H bonds and formation of N-N bonds.
Peter L. Dunn, Brian J. Cook, Samantha I. Johnson, Aaron M. Appel, R. Morris Bullock   +4 more
openaire   +3 more sources

Structural insights into the catalytic mechanism of ammonia monooxygenase

Nature Communications
Ammonia monooxygenase (AMO) oxidizes ammonia to hydroxylamine. Limited knowledge of the structural information of AMO hinders our understanding of the molecular mechanism underlying ammonia oxidation, impacting the mitigation of greenhouse gas emissions ...
Xiaoyun Yang, Zongqiang Li, Tie-Qiang Mao, Chaofu Ma, Guo-Hao Chen, Hong-Po Dong, Sen-Fang Sui   +6 more
doaj   +1 more source

Tailoring Microstructure in Copper‐Based Conductive Metal–Organic Frameworks for Enhanced Chemiresistive Sensing and Uptake of Sulfur Dioxide

Advanced Functional Materials, EarlyView.
Precursor‐ and solvent‐mediated synthesis yields four Cu3(HHTP)2 morphologies with distinct physicochemical, sorption, and sensing properties toward SO2. Uptake capacities correlate with BET surface area, while sensing performance scales with particle aspect ratio.
Patrick Damacet, Zhuoran Zhong, Elí Sánchez‐González, Camille L. Slagle, Ilich A. Ibarra, Katherine A. Mirica   +5 more
wiley   +1 more source

Influencing Factors of Ammonia Nitrogen Removal by Electro-oxidation in Seepage Drainage of Uranium Tailings Pond

Yuanzineng kexue jishu
Ammonia nitrogen wastewater is one of the most difficult water treatment problems in the world. In the process of uranium mining, beneficiation and smelting, radioactive solid waste will be produced which cann’t be effectively treated, and will be stored
WU Mingtao1, 2, ,  ZHOU Lei1,  XU Lechang1, ,  JIANG Guoping1, 3,
doaj   +1 more source

Nitrite improved nitrification efficiency and enriched ammonia-oxidizing archaea and bacteria in the simultaneous nitrification and denitrification process

Water Research X, 2023
Simultaneous nitrification and denitrification (SND) is effective and energy-saving for wastewater treatment. As an inevitable intermediate product in the SND process, nitrite affects the efficiency of ammonia oxidation and the composition of nitrifiers.
Yu Xiang, Tengzhi Zhou, Siping Deng, Zhiyu Shao, Yiwen Liu, Qiang He, Hongxiang Chai   +6 more
doaj   +1 more source

Media Optimization, Strain Compatibility, and Low-Shear Modeled Microgravity Exposure of Synthetic Microbial Communities for Urine Nitrification in Regenerative Life-Support Systems

, 2019
Urine is a major waste product of human metabolism and contains essential macro- and micronutrients to produce edible microorganisms and crops. Its biological conversion into a stable form can be obtained through urea hydrolysis, subsequent nitrification,
Boon, Nico, Clauwaert, Peter, Defoirdt, Tom, Ilgrande, Chiara, Vlaeminck, Siegfried   +4 more
core   +1 more source

Bimetallic Nanoreactor Activates cGAS‐STING Pathway via mtDNA Release for Cancer Metalloimmunotherapy

Advanced Functional Materials, EarlyView.
A bimetallic Mn–Ca nanoreactor (MCC) is developed as a non‐nucleotide STING nanoagonist for cancer metalloimmunotherapy. MCC induces Ca2+ overload and hydroxyl radical generation, resulting in mitochondrial damage and mtDNA release. The released mtDNA cooperates with Mn2+ to robustly activate cGAS–STING signaling.
Xin Wang Mo, Nguyen Thi Nguyen, LiLi Guo, Ngoc Man Phan, Hyunsu Shin, Tae‐il Kim, Yu Seok Youn, Jaeyun Kim   +7 more
wiley   +1 more source

Smarter Sensors Through Machine Learning: Historical Insights and Emerging Trends across Sensor Technologies

Advanced Functional Materials, EarlyView.
This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee, Osman Gul, Yeongjae Kwon, Jaeseok Jeong, Seokjoo Cho, Jihyeon Ahn, Jehee Yu, Cheolmin Kim, Donho Lee, Hyeonseok Han, Byeongju Lee, Jungrak Choi, Ji‐Hwan Ha, Yongrok Jeong, Kyungnam Kang, Ali Javey, Junseong Ahn, Inkyu Park   +17 more
wiley   +1 more source

High Pressure Ammonia Oxidation

Platinum Metals Review, 1986
The principles of the design and operation of a new variable high pressure, large diameter experimental ammonia oxidation test facility built by Johnson Matthey Metals Limited are described. The layout and arrangement of the plant are illustrated in some detail and examples of its use with platinum catalysts are given.
K. G. Gough, B. L. Wibberley
openaire   +1 more source

An Efficient Symmetric Electrolyzer Based On Bifunctional Perovskite Catalyst for Ammonia Electrolysis

Advanced Science, 2021
Ammonia is a natural pollutant in wastewater and removal technique such as ammonia electro‐oxidation is of paramount importance. The development of highly efficient and low‐costing electrocatalysts for the ammonia oxidation reaction (AOR) and hydrogen ...
Mengfei Zhang, Hao Li, Xiuyun Duan, Peimiao Zou, Georgina Jeerh, Boyao Sun, Shigang Chen, John Humphreys, Marc Walker, Kui Xie, Shanwen Tao   +10 more
doaj   +1 more source