Results 21 to 30 of about 114,508 (253)

Effects of acute ammonia nitrogen exposure on metabolic and immunological responses in the Hong Kong oyster Crassostrea hongkongensis

Ecotoxicology and Environmental Safety, 2022
Ammonia nitrogen, a major oxygen-consuming pollutant in the environment, can adversely affect aquatic organisms such as fish, bivalves, and crustaceans.
Jie Lu, Tuo Yao, Shaokun Shi, Lingtong Ye   +3 more
doaj   +1 more source

THE DISTILLATION OF AMMONIA IN THE DETERMINATION OF NITROGEN. [PDF]

Journal of the American Chemical Society, 1900
n ...
openaire   +1 more source

Stimulation of thaumarchaeal ammonia oxidation by ammonia derived from organic nitrogen but not added inorganic nitrogen [PDF]

FEMS Microbiology Ecology, 2012
Ammonia oxidation, the first step in nitrification, is performed by autotrophic bacteria and thaumarchaea, whose relative contributions vary in different soils. Distinctive environmental niches for the two groups have not been identified, but evidence from previous studies suggests that activity of thaumarchaea, unlike that of bacterial ammonia ...
Spela, Levičnik-Höfferle, Graeme W, Nicol, Luka, Ausec, Ines, Mandić-Mulec, James I, Prosser   +4 more
openaire   +2 more sources

Chronic Ammonia Stress in Chinese Perch (Siniperca chuatsi): Oxidative Response, Nitrogen Metabolism, and Multi-Enzyme-Mediated Molecular Detoxification Defense Mechanisms

Antioxidants
Chinese perch (Siniperca chuatsi), an economically important freshwater fish in China, faces ammonia nitrogen stress under high-density aquaculture.
Yan Li, Ru Yang, Minghui He, Jianmei Su, Liwei Liu   +4 more
doaj   +1 more source

PROTOSOLAR AMMONIA AS THE UNIQUE SOURCE OF TITAN's NITROGEN [PDF]

The Astrophysical Journal, 2014
The origin of Titan's nitrogen-rich atmosphere is thought to be ammonia ice, but this has not yet been confirmed. Furthermore, it is uncertain whether the building blocks of Titan formed within the Saturnian subnebula or in the colder protosolar nebula (PSN).
Mandt, Kathleen, Mousis, Olivier, Lunine, Jonathan, Gautier, Daniel   +3 more
openaire   +4 more sources

Deciphering the ammonia transformation mechanism of a novel marine multi-stress-tolerant yeast, Pichia kudriavzevii HJ2, as revealed by integrated omics analysis

Applied and Environmental Microbiology
Ammonia nitrogen posed a significant threat to aquatic animals in aquaculture environments, and the substantial potential of microorganisms in removing ammonia nitrogen had garnered considerable attention.
Kunmei Huang, Huashan Bai, Can Meng, Muhammad Kashif, Zhiling Wei, Zaihang Tang, Shu He, Shanguang Wu, Sheng He, Chengjian Jiang   +9 more
doaj   +1 more source

Nitrogen Availability Of Nitriding Atmosphere In Controlled Gas Nitriding Processes

Archives of Metallurgy and Materials, 2015
Parameters which characterize the nitriding atmosphere in the gas nitriding process of steel are: the nitriding potential KN, ammonia dissociation rate α and nitrogen availabilitymN2.
Michalski J., Burdyński K., Wach P., Łataś Z.   +3 more
doaj   +1 more source

Ammonia should be considered in field experiments mimicking nitrogen deposition

Atmospheric and Oceanic Science Letters, 2020
Excess nitrogen deposition has significant impacts on water eutrophication, soil acidification, eleveted greenhouse gas emissions, and biodiversity loss.
Yuepeng PAN, Shili TIAN, Dianming WU, Wen XU, Xiaying ZHU, Chunyan LIU, Dejun LI, Yunting FANG, Lei DUAN, Xuejun LIU, Yuesi WANG   +10 more
doaj   +1 more source

Transcriptome analysis of gills reveal the key metabolism-related genes and pathways response to ammonia nitrogen stress in Scylla paramamosain

Frontiers in Marine Science
Ammonia nitrogen is highly toxic to crustaceans; however, studies investigating the molecular mechanisms underlying its metabolism and excretion in these organisms remain scarce.
Chaoyue Wang, Xiao Liu, Jie Zhou, Sixiang Wang, Xia Zheng, Zehao Li, Yuanyuan Fu, Zhongwen Jin, Lei Liu   +8 more
doaj   +1 more source

Analysis of Distribution and Influencing Factors of Three-Nitrogen in Groundwater of the Liuxi River Basin

Renmin Zhujiang, 2021
Based on the monitoring data of 28 sampling points in the study area from 2012 to 2018,the distribution characteristics and influencing factors of groundwater three nitrogen in Liuxi River Basin were analyzed.The results showed that the mass ...
PANG Yuan, ZENG Hui, ZHANG Mingzhu, ZHUO Quanlong, GUO Zhengguo   +4 more
doaj