Results 21 to 30 of about 1,918,798 (195)

An 15N study of the effects of nitrate, ammonium, and nitrate + ammonium nutrition on nitrogen assimilation in Zea Mays L. [PDF]

, 1984
Bibliography: leaves 113-134.A brief review of the literature on the effects of nitrate and ammonium nitrogen sources on plant growth, and the assimilation of those nitrogen sources, has been presented.
Murphy, Andrew Telfer
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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

Adsorption and Aggregation Behavior of Mixtures of Quaternary-Ammonium-Salt-Type Amphiphilic Compounds with Fluorinated Counterions and Surfactants

, 2021
The surface adsorption and aggregation behavior of a mixture of quaternary-ammonium-salt-type amphiphilic monomeric compounds (C4 FSA, C8 FSA, and C4 NTf2) or gemini compounds (C10-2-C4 FSA) and various surfactants (nonionic hexaoxyethylene dodecyl ether
Risa Kawai (494245), Tomokazu Yoshimura, Shiho Yada (3903907), Tomokazu Yoshimura (2070670), Risa Kawai, Shiho Yada   +5 more
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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

Effectiveness Buminal-Ammonia Mixtures on Attraction of the Mediterranean Fruit Fly, Ceratitis capitata with Particular Emphasis on their Hidrogenionic Potential (pH) [PDF]

Journal of Plant Protection and Pathology, 2021
Food bait which is rich in nitrogen has an intensive impact on physiology and behavior of fruit flies. Addition of ammonia to food baits can improve their effectiveness and the pH-level of these baits plays an important role in attracting fruit flies ...
Rania Alhussieny, M. M. El-Metwally, S. S. Awadalla, mohamed hassan   +3 more
doaj   +1 more source

2-Arylacetic anhydrides as ammonium enolate precursors [PDF]

, 2014
This work is supported by funding from the Carnegie Trust for the Universities of Scotland and EPSRCReadily prepared 2-arylacetic anhydrides act as convenient ammonium enolate precursors in isothiourea (HBTM-2.1)-mediated catalytic asymmetric ...
Morrill, Louis C., Smith, Andrew D., Harper, Andrew D., Fallan, Charlene, Morrill, Louis, Bickel, Jasmine, Couturier, Jean-Philippe, Ledingham, Lyndsay A.   +7 more
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Data for Quaternary ammonium compounds (QACs) in wastewater influent and effluent collected throughout the COVID-19 pandemic

, 2022
The data in this file are the concentrations of quaternary ammonium compound (QAC) disinfectants in wastewater influent and effluent from four wastewater treatment plants from May 2020 to January 2022.
Arnold, William A, Mahony, Anna K, McNamara, Patrick J   +2 more
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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

The whole cell catalysed hydrolysis of acrylamide to ammonium acrylate using an immobilised cell bioreactor [PDF]

Methods currently used for manufacturing the commodity chemical ammonium acrylate involve high temperatures that increases the risk of unwanted polymerisation and, in certain cases, leads to the generation of large amounts of unwanted by-product.
Brennan, Mark
core   +3 more sources