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Determination of eight nitrosamines in water at the ng L−1 levels by liquid chromatography coupled to atmospheric pressure chemical ionization tandem mass spectrometry
In this work, we have developed a sensitive method for detection and quantification of eight N-nitrosamines, N-nitrosodimethylamine (NDMA), N-nitrosomorpholine (NMor), N-nitrosomethylethylamine (NMEA), N-nitrosopirrolidine ...
Comparison between triple quadrupole, time of flight and hybrid quadrupole time of flight analysers coupled to liquid chromatography for the detection of anabolic steroids in doping control analysis
Triple quadrupole (QqQ), time of flight (TOF) and quadrupole-time of flight (QTOF) analysers have been compared for the detection of anabolic steroids in human urine. Ten anabolic steroids were selected as model compounds ...
From Salts to Ionic Liquids by Systematic Structural Modifications: A Rational Approach Towards the Efficient Modular Synthesis of Enantiopure Imidazolium Salts
This paper reports a simple and robust modular synthetic strategy that leads to a large variety of configurationally and structurally diverse imidazole-based chiral ionic liquids (CILs) by lipase-catalyzed resolution. The ...
A procedure to evaluate the resistance to biological colonization as a characteristic for product quality of ceramic roofing tiles
Ceramic roofing tiles suffer deterioration through time due to environmental exposure. Biological colonization affects the appearance and integrity of building materials, such as roofing tiles. The resistance to biocolonization ...
One-Pot Preparation of Imines from Nitroarenes by a Tandem Process with an Ir–Pd Heterodimetallic Catalyst
A new tandem catalytic process has been studied for a heterodimetallic complex containing both iridium and palladium fragments connected by a 1,2,4-trimethyltriazolyldiylidene ligand. The process implies the unprecedented ...
On causality in the size-efficiency relationship: the effect of investor cash flows on the mutual fund industry
One of the perceived advantages in mutual fund management is the presence of economies of scale resulting from fund size. This article analyses the impact of mutual fund cash flows on the relation between size and performance, ...
Topological Study of the Late Steps of the Artemisinin Decomposition Process: Modeling the Outcome of the Experimentally Obtained Products
By using 6,7,8-trioxabicyclo[3.2.2]nonane as the artemisinin model and dihydrated Fe(OH)2 as the heme model, we report a theoretical study of the late steps of the artemisinin decomposition process. The study offers two ...
(n6-arene)Ru(bis-NHC) complexes for the reduction of CO2 to formate with hydrogen and by transfer hydrogenation with iPrOH
(Royal Society of Chemistry, 2010)
A series of bis-NHC-complexes of Ru and Ir have been tested in the reduction of carbon dioxide to formate. The use of one of the ‘(η6-arene)Ru(bis-NHC)’ complexes (labeled as 1 in the text) in the reduction of carbon dioxide ...
Electronic fluxes during diels-alder reactions involving 1,2-Benzoquinones: mechanistic insights from the analysis of electron localization function and catastrophe theory
By means of the joint use of electron localization function (ELF) and Thom's catastrophe theory, a theoretical analysis of the energy profile for the hetero-Diels-Alder reaction of 4-methoxy-1,2-benzoquinone 1 and ...
Study of the rheological behaviour of monomodal quartz particle beds under stress: a model for the shear yield functions of powders
A model is proposed that describes the yield locus of powders. The model is based on the adhesive contact of elastic spheres theory developed by Johnson, Kendall, and Roberts (JKR model). The proposed model improves the ...