Modern spectroscopic techniques such as time-resolved second-harmonic-generation spectroscopy allow molecules to be examined selectively directly at phase interfaces. Two-phase systems formed by glycerol/water and alkane layers have previously been studied by time-resolved second-harmonic-generation spectroscopic measurements. In this molecular dynamics study, a triphenylmethane dye was inserte...

This study aimed to assess the use of very long-chain fatty acids (VLCFA) as an alternative or a complement to n-alkane markers for estimation of diet composition of goats fed 7 different diets, composed of different proportions of herbaceous (Lolium perenne and Trifolium repens) and heathland woody species (Erica umbellata, Erica cinerea, Calluna vulgaris, Erica arborea, and Ulex gallii), in a...

Evaluating the importance of natural marine hydrocarbon seeps to global methane budgets requires correctly predicting the gas fraction lost by the seep bubbles during transit through the water column. In the Santa Barbara Channel, California, three widely differing seeps (depth, flux, oiliness) were visited and observations were made of seep gas partial pressures, Pi, near the surface for alkan...

Most classical dendrimers are frequently built-up from identical repeating units of low valency (usually AB2 monomers). This strategy necessitates several generations to achieve a large number of surface functionalities. In addition, these typical monomers are achiral. We propose herein the use of sugar derivatives consisting of several and varied functionalities with their own individual intri...

M. Jodkowski, J. Łabaj, J. Brzóska, D. Jama – Silesian University of Technology, Katowice, Poland The research results on a method of reducing the amount of binder applied during formation of metal concentrates are presented. Research was done on a model copper concentrate, which was mixed in assumed mass fraction with binder, as well as binder with addition of waste polyols. Such mixtures were...

The paper describes a signal method for processing GC-MS signals to extract usable information hidden in the chromatogram thus reducing the labour and time required to handle the data and increasing the quality and objectivity of the results. The method is focused on two relevant parameters for identification and characterization of the n-alkane series present in complex samples (in particular ...

Fungal lignocellulolytic enzymes are promising agents for oxidizing pollutants. This study investigated degradation of Number 6 "Bunker C" fuel oil compounds by the white-rot fungi Irpex lacteus, Trichaptum biforme, Phlebia radiata, Trametes versicolor, and Pleurotus ostreatus (Basidiomycota, Agaricomycetes). Averaging across all studied species, 98.1%, 48.6%, and 76.4% of the initial Bunker C ...

Cayley's theorem, in principle, can be used in determining the isomers of alkanes lot, which was originally limited to the calculation of the number of isomers of manual calculation, the method of "drawing and counting." Graph structure of the alkane is a tree (the tree). By proving that the alkane is a tree graph of a satisfying E (G) = V (G) with a value of V (G) = 3n + 2 and E (G) = 3n +1, -...

2014 The effects of mixed phospholipid headgroup composition and the addition of small amounts of alkane were examined with respect to the lamellar (L03B1) to inverse hexagonal (HII) phase transition in phospholipidwater liquid crystals. X-ray diffraction was used to probe the lattices and determine the phases. It has been postulated that competition between hydration repulsion, lipid monolayer...

The Deepwater Horizon (DWH) blowout in the northern Gulf of Mexico represents one of the largest marine oil spills. Significant shifts in bacterial community composition in the water column correlated to the microbial degradation and utilization of oil hydrocarbons. Nevertheless, the full genetic potential and taxon-specific metabolisms of bacterial hydrocarbon degraders enriched during the DWH...