Results 81 to 90 of about 114,508 (253)

ESTIMATION OF NITROGEN WITH AN AMMONIA PROBE [PDF]

Journal of the Institute of Brewing, 1974
An ammonia probe has been used to replace the distillation-titration procedure for estimating the ammonium content of Kjeldahl digest solutions. A procedure is described for estimating the total nitrogen content of barley, malt, wort and beer. The semi-micro digestion stage is performed as a batch procedure and the ammonium content of the acid digest ...
openaire   +1 more source

Confinement‐Driven CO Spillover in CuAg@MSN Tandem Catalysts Boosts C2 Selectivity Toward Electrocatalytic CO2 Reduction

Advanced Science, EarlyView.
The CuAg@MSN catalyst developed in this study promotes C─C coupling by regulating the coverage of *CO intermediates through spatial confinement effects, significantly enhancing the selectivity of CO2 electroreduction for C2 product formation. ABSTRACT Tandem catalysts represent a promising paradigm for synergistic electrochemical CO2 reduction (CO2RR ...
Jiaying Zhang, Junjie Huang, Siying Zhang, Yanjia Cui, Chao Kong, Zijian Peng, Huihui Jiang, Sirui Deng, Zhuoyao Chen, Caili Yang, Ketong He, Zhen Li, Yibing Song, Gongwei Wang, Lin Zhuang   +14 more
wiley   +1 more source

Exceptional CO2 Hydrogenation to Gasoline Enabled by GaZrOx/Ga‐ZSM‐5 Tandem Catalyst

Advanced Science, EarlyView.
A GaZrOx/Ga‐ZSM‐5 tandem catalyst achieves 17.2% CO2 conversion with 83.2% C5+ selectivity and >400 h stability relies on optimized O‐vacancies and Ga‐H coverage for CO2 hydrogenation. ABSTRACT CO2 hydrogenation to gasoline offers a promising route for addressing energy challenges and enabling the effective utilization of carbon resources. However, the
Wenhui Li, Yujing Sun, Bingyu Liu, Yaoyang Ni, Hong Yang, Xinwen Guo   +5 more
wiley   +1 more source

2D Inorganic Electrides: Interstitial Electrons as Key Drivers of Multifunctional Properties and Applications

Advanced Science, EarlyView.
Eight AB‐type 2D inorganic electrides with negatively charged transition metals are theoretically designed. Their monolayers exhibit intrinsic magnetic ordering, rich topological phases, and ultralow work functions. Supported metal Ru on these 2D inorganic electrides effectively alleviates hydrogen poisoning and enables efficient ammonia synthesis ...
Qianwen Zhang, Xia Cheng, Zhenzhou Guo, Weiyao Jia, Ying Yang, Zhenxiang Cheng, Weizhen Meng   +6 more
wiley   +1 more source

Research progress on effects of ammonia nitrogen on oxidative stress， immune response and tissue damage in fish and nutritional regulation strategies under ammonia nitrogen stress

Siliao yanjiu
Under the intensive culture mode, the ammonia nitrogen content in water is increased, which has adverse effects on the health of fish. Long-term exposure to high concentrations of ammonia nitrogen will induce excessive accumulation of reactive oxygen ...
KOU Yihan, YAO Baolan, YAN Zihao, LIU Jia, JIAO Xue, LI Yuehong   +5 more
doaj  

In-situ biological regeneration of zeolite to enhance the treatment of high ammonia-nitrogen wastewater by partial nitrification

Gongye shui chuli
In order to solve the problem of high concentration of free ammonia(FA) inhibiting ammonia oxidizing bacteria and causing high concentration of ammonia nitrogen wastewater to be unable biologically treated, natural zeolite was used to alleviate the ...
CHEN Xu, YANG Xiaofan, WANG Chenggang, KUANG Naiqiang, CHEN Chunfu, ZHANG Liqiu   +5 more
doaj   +1 more source

Interfacial Water Coordination on Ruthenium Oxide Nanoparticles Confined Within Covalent Organic Framework and Its Effect on Electrochemical Nitrate Reduction

Advanced Science, EarlyView.
We demonstrate how oxygen‐deficient ruthenium oxide (RuOx) nanoparticles confined within covalent organic framework achieve highly efficient nitrate‐to‐ammonia conversion. Strong interaction between RuOx nanoparticles and COF results in modified interfacial hydrogen‐bond water network and adsorption of nitrogenous intermediates.
Yun Li, Xin Zhao, Arsenii S. Portniagin, Yuxuan Wu, Desui Chen, Haochen Liu, Andrey L. Rogach   +6 more
wiley   +1 more source

Selective Adsorption of Ammonia from Nitrogen and Hydrogen Using Zeolite 13X: Isotherm and Breakthrough Studies

Applied Sciences
The separation of synthesised ammonia from unreacted nitrogen and hydrogen is a crucial step in producing high-purity ammonia and enabling the efficient recycling of unreacted gases in the ammonia synthesis process.
Babak Mokhtarani, Ali Salehabadi, Hamid Reza Rahimpour, Jafar Zanganeh, Behdad Moghtaderi   +4 more
doaj   +1 more source

Vascularized Liver‐on‐a‐Microsphere Reveals Alanine‐Glucose Metabolism‐Driven Regulation of Liver Function and Injury

Advanced Science, EarlyView.
A vascularized liver‐on‐a‐microsphere system is developed to recreate lobule‐like cellular organization and endothelial barrier function within compartmentalized hydrogel particles. The platform enhances hepatic performance and reveals alanine‐glucose cycle activation linked to improved detoxification capacity, offering a high‐throughput microscale ...
Jingyang Li, Zengnan Wu, Yingrui Zhang, Shulang Chen, Yongning Lin, Shiyu Chen, Tong Xu, Xianli Meng, Yi Zhang, Jin‐Ming Lin   +9 more
wiley   +1 more source

Process on biological nitrogen removal technology of ammonia- nitrogen wastewater from ion-type rare earth mines

Gongye shui chuli
Ammonium sulfate is a commonly used leaching agent in the mining process of southern ion-type rare earth mines, which causes large quantities of mine ammonia-nitrogen wastewater under the leaching action of rainwater even after stopping mining for a long
FAN Cunwen, GUO Peijie, HU Yujia, LIU Xinfu, QIU Qingrong, SU Hao, ZHANG Dachao   +6 more
doaj   +1 more source