Results 11 to 20 of about 186,568 (160)

Hygroscopicity of organic compounds from biomass burning and their influence on the water uptake of mixed organic ammonium sulfate aerosols [PDF]

Atmospheric Chemistry and Physics, 2014
Hygroscopic behavior of organic compounds, including levoglucosan, 4-hydroxybenzoic acid, and humic acid, as well as their effects on the hygroscopic properties of ammonium sulfate (AS) in internally mixed particles are studied by a hygroscopicity tandem
T. Lei, A. Zuend, W. G. Wang, Y. H. Zhang, M. F. Ge   +4 more
doaj   +1 more source

Changes of inorganic nitrogen compounds concentration in a mining enterprise wastewater by the microalgae Chlorella vulgaris

Vestnik MGTU, 2023
Wastewater contamination by nitrogen compounds is a serious problem for the mining, industrial and utility companies. Nitrogen can enter quarry effluent when explosives containing ammonium nitrate are used in blasting operations.
Shcheglov G. A.
doaj   +1 more source

Ammonium toxicity and potassium limitation in yeast. [PDF]

PLoS Biology, 2006
DNA microarray analysis of gene expression in steady-state chemostat cultures limited for potassium revealed a surprising connection between potassium and ammonium: potassium limits growth only when ammonium is the nitrogen source.
David C Hess, Wenyun Lu, Joshua D Rabinowitz, David Botstein   +3 more
doaj   +1 more source

Groundwater chemistry, pollution, and health risk assessment for nitrogen compounds. A case study in a suburban region of Romania

Romanian Journal of Ecology & Environmental Chemistry, 2022
As groundwater is used as a source of drinking water, monitoring its quality is essential due to possible adverse effects on human health. Nitrogen compounds (nitrates, nitrites, ammonia) within certain concentration limits are natural components of the ...
Nicoleta Vasilache, Luisa Roxana Mandoc, Elena Diacu, Gabriela Geanina Vasile, Anda Gabriela Tenea, Alexandru Arcide, Gheorghe Batrinescu, Iuliana Paun, Stefania Gheorghe   +8 more
doaj   +1 more source

Synthesis of Novel Quaternary Ammonium Salts and Their in Vitro Antileishmanial Activity and U-937 Cell Cytotoxicity

Molecules, 2016
This work describes the synthesis of a series of quaternary ammonium salts and the assessment of their in vitro antileishmanial activity and cytotoxicity.
Sandra M. Duque-Benítez, Luz Amalia Ríos-Vásquez, Rogelio Ocampo-Cardona, David L. Cedeño, Marjorie A. Jones, Iván D. Vélez, Sara M. Robledo   +6 more
doaj   +1 more source

Synthesis, Analysis, Cholinesterase-Inhibiting Activity and Molecular Modelling Studies of 3-(Dialkylamino)-2-hydroxypropyl 4-[(Alkoxy-carbonyl)amino]benzoates and Their Quaternary Ammonium Salts

Molecules, 2017
Tertiary amines 3-(dialkylamino)-2-hydroxypropyl 4-[(alkoxycarbonyl)amino]benzoates and their quaternary ammonium salts were synthesized. The final step of synthesis of quaternary ammonium salts was carried out by microwave-assisted synthesis.
Tereza Padrtova, Pavlina Marvanova, Klara Odehnalova, Renata Kubinova, Oscar Parravicini, Adriana Garro, Ricardo D. Enriz, Otakar Humpa, Michal Oravec, Petr Mokry   +9 more
doaj   +1 more source

Laboratory studies on dissolution of nitrogen fertilizers by humidity and precipitation

Agricultural & Environmental Letters, 2020
Aiming at improving fertilizer management by assessing fertilizer dissolution, we compared the hygroscopicity of calcium ammonium nitrate (CAN), ammonium nitrate (NS 27‐4), and nitrate compounds (laboratory grade).
Christian Sigtryggsson, Karin Hamnér, Holger Kirchmann   +2 more
doaj   +1 more source

quaternary ammonium compounds

, 2014
Citation: 'quaternary ammonium compounds' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.Q05003 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms ...
Lennart Kaj, Petra Wallberg, Eva Brorström-Lundén   +2 more
openaire   +3 more sources

Comparison of the effects of seed coating with tungsten and molybdenum compounds on seedling establishment rates of rice, wheat, barley, and soybean under flooded conditions

Plant Production Science, 2017
Seed coating with molybdenum compounds improves seedling establishment for rice, wheat, barley, and soybean when such seeds were sown under flooded conditions.
Yoshitaka Hara
doaj   +1 more source

Bacterial metabolism of quaternary ammonium compounds [PDF]

Applied and Environmental Microbiology, 1977
Of 10 quaternary ammonium compounds tested for biodegradation by the biological oxygen demand technique, only decyl- and hexadecyltrimethylammonium bromides were decomposed by organisms derived from sewage and soil. A mixture consisting of individual strains of Pseudomonas and Xanthomonas grew in solutions containing decyltrimethylammonium bromide as ...
D, Dean-Raymond, M, Alexander
openaire   +2 more sources