Search results for "ammonium"
showing 10 items of 1070 documents
European eel (<i>Anguilla anguilla</i>) plasma biochemistry alerts about propanil stress
2017
Propanil stress response in the eel (Anguilla anguilla) was examined. Eels were exposed to 3.16 mg/L for 72 hr and allowed to recover for 96 hr. Plasma levels of cortisol, lactate dehydrogenase (LDH), alkaline phosphatase (AP), aspartate aminotransferase (AST), cholesterol, triglycerides, glucose, ammonium, lactate, albumin, and total proteins as well as electrolytes (chloride, sodium, potassium, calcium and phosphorus) were determined. As a consequence of exposure, cortisol, AP, AST, and LDH increased. A hyperglycemic condition, together with hyperlactemia, hypoalbuminemia, hypoproteinemia, hypercholesterolemia and hypertriglycemia was registered. Ammonium increased during exposure concomi…
Ammonium thiolactate and thiolactic acid: important hairdressers' allergens?
2002
The effect of peracetic acid on microbial community, water quality, nitrification and rainbow trout (Oncorhynchus mykiss) performance in recirculatin…
2020
Abstract Microbial biofilters control water quality and enable the overall function of recirculation aquaculture systems (RAS). Changes in environmental conditions can affect the abundance and interactions of the diverse microbial populations of the biofilter, affecting nitrification of harmful ammonium and thus fish health. Here, we examined the effect of different application frequencies (0, 1, 2 and 4 times per week) of a common disinfectant, peracetic acid (PAA, applied 1.1 mg l−1 twice per day), on biofilter microbial communities, focusing especially on nitrifying microbial groups and using a high throughput sequencing of 16S rRNA gene and quantitative PCR (qPCR). In addition, we measu…
NO donors. Part 16: investigations on structure-activity relationships of organic mononitrates reveal 2-nitrooxyethylammoniumnitrate as a high potent…
2007
The vasoactive properties of 14 organic mononitrates were investigated in vitro using PGF(2alpha)-precontracted porcine pulmonary arteries. A surprisingly wide range of vasorelaxant potencies was observed (pD(2): 3.36-7.50). Activities showed to be highly sensitive to the molecular structure and the substituents at the molecular carrier of the nitrate group. A correlation between lipophilicity and vasorelaxant potency could not be recognized. 2-Nitrooxyethylammoniumnitrate (1) was found to be slightly superior to the high potency trinitrate GTN.
CCDC 149028: Experimental Crystal Structure Determination
2001
Related Article: A.Shivanyuk, M.Saadioui, F.Broda, I.Thondorf, M.O.Vysotsky, K.Rissanen, E.Kolehmainen, V.Bohmer|2004|Chem.-Eur.J.|10|2138|doi:10.1002/chem.200305633
CCDC 149027: Experimental Crystal Structure Determination
2001
Related Article: A.Shivanyuk, M.Saadioui, F.Broda, I.Thondorf, M.O.Vysotsky, K.Rissanen, E.Kolehmainen, V.Bohmer|2004|Chem.-Eur.J.|10|2138|doi:10.1002/chem.200305633
CCDC 149024: Experimental Crystal Structure Determination
2001
Related Article: A.Shivanyuk, M.Saadioui, F.Broda, I.Thondorf, M.O.Vysotsky, K.Rissanen, E.Kolehmainen, V.Bohmer|2004|Chem.-Eur.J.|10|2138|doi:10.1002/chem.200305633
The Vibrio choleare haemolysin anion channel is required for cell vacuolation and death
2002
SummarySeveral strains of Vibrio cholerae secrete ahaemolytic toxin of 63kDa, termed V. cholerae cytolysin (VCC). This toxin causes extensive vacuo-lation and death of cells in culture and forms ananion-selective channel in planar lipid bilayers and incells. Here, we identify inhibitors of the VCC anionchannel and show that the formation of the anionchannel is necessary for the development of the vacuoles and for the cell death induced by this toxin. Using markers of cell organelles, we show that vacuoles derive from different intracellular com-partments and we identify the contribution of lateendosomes and of the trans -Golgi network in vacuolebiogenesis.Introduction The Gram-negative bact…
Identification and characterization of aging products in the glyoxal/ammonium sulfate system – implications for light-absorbing material in atmospher…
2012
Abstract. In this study we report the identification of bicyclic imidazoles in aqueous aerosol mimics using HPLC-ESI-MS/MS. 2,2´-Biimidazole was identified to be a major contributor to the 280 nm absorbance band observed in mixtures of glyoxal and ammonium sulfate, despite the fact that its production rate is two orders of magnitude lower than the previously reported production rates of imidazole or imidazole-2-carboxaldehyde. The molar absorptivity of 2,2´-biimidazole was determined to be (36 690&amp;pm;998) M−1 cm−1. This demonstrates the necessity of molecular product identification at trace levels to enable a better understanding of relevant absorbing species. Additionally the forma…
CCDC 1913148: Experimental Crystal Structure Determination
2019
Related Article: Hongxin Chai, Zhi-Sheng Pan, Liu-Pan Yang, Shan He, Fangfang Pan, Kari Rissanen, Wei Jiang|2019|Chem.Commun.|55|7768|doi:10.1039/C9CC03341F