Results 41 to 50 of about 23,283 (229)

spectroscopic stury of lewis bases coordinating to vanady

open access: yesمجلة بغداد للعلوم, 2006
formation constants for the conrdination of aniline pyridine dimethyl sulfoxide dimethyl formamide ethanol dimethylamine have been determined the ...
Baghdad Science Journal
doaj   +1 more source

Measurement of ammonia, amines and iodine compounds using protonated water cluster chemical ionization mass spectrometry [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
Here we describe the design and performance of a new water cluster chemical ionization–atmospheric pressure interface time-of-flight mass spectrometer (CI-APi-TOF). The instrument selectively measures trace gases with high proton affinity such as ammonia
J. Pfeifer   +15 more
doaj   +1 more source

Limited Role of Malonic Acid in Sulfuric Acid–Dimethylamine New Particle Formation

open access: yes, 2023
Aerosols play an important role in climate and air quality; however, the mechanisms behind aerosol particle formation in the atmosphere are poorly understood.
Sandra K.W. Fomete (15677089)   +3 more
core   +1 more source

Environmental pesticide exposure and non-Hodgkin lymphoma survival: a population-based study

open access: yesBMC Medicine, 2022
Background There is evidence indicating that pesticide exposure is a risk factor for non-Hodgkin lymphoma (NHL) development. However, the association between pesticide exposure and NHL survival is not well-established. Methods Using the California Cancer
Christina Poh   +7 more
doaj   +1 more source

A New Homogeneous Catalyst for the Dehydrogenation of Dimethylamine Borane Starting with Ruthenium(III) Acetylacetonate [PDF]

open access: yes, 2015
The catalytic activity of ruthenium(III) acetylacetonate was investigated for the first time in the dehydrogenation of dimethylamine borane. During catalytic reaction, a new ruthenium(II) species is formed in situ from the reduction of ruthenium(III) and
Özkar, Saim   +5 more
core   +1 more source

Nickelferrite on Pnictogen Functionalized Carbon Nanohorns. Bifunctional ORR and OER Catalysts in Rechargeable Zinc‐Air Batteries

open access: yesAdvanced Science, EarlyView.
A systematic study on the performance of N,P‐doped NiFe2O4@CNH bi‐functional hybrid electrocatalysts for rechargeable zinc‐air batteries is presented. The importance of P, N‐doping and the intimate tethering of nickel‐ferrite nanocubes on the carbon nano‐horn (CNH) surface which are well dispersed on the surface of N,P doped CNHs.
Sudheer Kumar Yadav   +4 more
wiley   +1 more source

In Situ CO2‐Induced Hydrogels for Enhancing Carbon Sequestration in Saline Aquifers

open access: yesAdvanced Science, EarlyView.
A novel integrated method that combines in situ CO2‐induced phase‐transition hydrogels formed by a C22‐tailed tertiary amine dispersion with tailored deep eutectic solvents to increase CO2 sequestration in saline aquifers. ABSTRACT Carbon sequestration in saline aquifers underpins global net‑zero emission goals, yet existing CO2 storage capacity ...
Fuchuan Liu   +5 more
wiley   +1 more source

Synthese von Aminocyclopropanen durch redoxneutrale Aminoalkylierung

open access: yesAngewandte Chemie, EarlyView.
Wir berichten über eine Synthese von Aminocyclopropanen durch Hydroaminoalkylierung unter Einsatz kostengünstiger, leicht zugänglicher Ausgangsmaterialien. Der Ansatz bietet Orthogonalität zu gängigen Methoden und ermöglicht eine breite Toleranz gegenüber funktionellen Gruppen.
Gwyndaf A. Oliver   +6 more
wiley   +1 more source

Challenges of Bio‐Syngas Conversion to High‐Value‐Added Liquid Chemicals and Fuels via COx Hydrogenation

open access: yesCarbon Energy, EarlyView.
Converting biomass‐derived syngas into value‐added fuels and chemicals offers a promising route toward carbon neutrality, yet unfavorable H2/COx ratios, elevated CO2 levels, and trace impurities pose persistent obstacles. This review examines strategies spanning syngas conditioning, impurity‐tolerant catalyst development, and integrated process design,
Xuan Bie   +7 more
wiley   +1 more source

Development and Application of Analytical Methods to Quantitate Nitrite in Excipients and Secondary Amines in Metformin API at Trace Levels Using Liquid Chromatography–Tandem Mass Spectrometry

open access: yesChemosensors
Nitrosamine impurities have provoked numerous global medicine recalls due to their possible presence during drug manufacturing or storage. Regarding formulation of nitrosamine impurities, a key risk involves reactions between nitrosating agents (nitrite)
Ilyoung Ahn   +9 more
doaj   +1 more source

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