Results 21 to 30 of about 409,260 (353)

Complexing additives to reduce the immiscible phase formed in the hybrid ZnBr2 flow battery [PDF]

open access: yes, 2017
The zinc-bromine redox flow battery (RFB) is one of a very few commercially viable RFB energy storage system capable of integration with intermittent renewable energy sources to deliver improved energy management.
Berlouis, L.   +4 more
core   +1 more source

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

open access: yesMolecules, 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   +6 more
doaj   +1 more source

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

open access: yesRomanian 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   +8 more
doaj   +1 more source

An integrated targeted and untargeted approach for the analysis of ergot alkaloids in cereals using UHPLC - hybrid quadrupole time-of-flight mass spectrometry [PDF]

open access: yes, 2015
An ultra-high performance liquid chromatography hybrid quadrupole time of flight (Q-TOF) mass spectrometry (MS) method is described for the simultaneous quantitative determination of common ergot alkaloids and the screening, detection and identification ...
Arroyo Manzanares, Natalia   +5 more
core   +2 more sources

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

open access: yesMolecules, 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   +9 more
doaj   +1 more source

Laboratory studies on dissolution of nitrogen fertilizers by humidity and precipitation

open access: yesAgricultural & 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   +2 more
doaj   +1 more source

Bacterial metabolism of quaternary ammonium compounds [PDF]

open access: yesApplied 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 ...
M Alexander, D Dean-Raymond
openaire   +3 more sources

Removal of quaternary ammonium compounds in ion exchange process [PDF]

open access: yesE3S Web of Conferences, 2019
The study attempted to evaluate the effectiveness of ion exchange process in cationic surfactant (benzalkonium chloride, BAC) removal from model solutions.
Klimonda Aleksandra, Kowalska Izabela
doaj   +1 more source

Effect of operational parameters and Pd/In catalyst in the reduction of nitrate using copper electrode [PDF]

open access: yes, 2017
Water with high concentration of nitrate may cause damage to health and to the environment. This study investigated how concentration, current density, flow, pH, the use of Pd/In catalyst and operating mode (constant current density and constant cell ...
Beltrame, Thiago Favarini   +5 more
core   +1 more source

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

open access: yesPlant 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

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