Perinatal asphyxia partly affects presepsin urine levels in non-infected term infants.

Objectives: Standard of care sepsis biomarkers such as C-reactive protein (CRP) and procalcitonin (PCT) can be affected by several perinatal factors, among which perinatal asphyxia (PA) has a significant role. In this light, new early sepsis biomarkers such as presepsin (P-SEP) are needed to enact therapeutic strategies at a stage when clinical and laboratory patterns are still silent or unavailable. We aimed at investigating the potential effects of PA on longitudinal P-SEP urine levels.

Kinetics of electron transfer reactions by humic substances: Implications for their biogeochemical roles and determination of their electron donating capacity.

Humic substances (HS) possess redox active groups covering a wide range of potentials and are used by facultative anaerobic microorganisms as electron acceptors. To serve as suitable electron shuttles for anaerobic respiration, HS should be able to re-oxidize relatively quickly to prevent polarization of the surrounding medium. Mediated electrochemical oxidation and decolorization assays, based on the reduction of the radical ion of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) allow to determine the electron donating capacity (EDC) of HS, but uncertainties remain about the reaction time that should be allowed to obtain environmentally meaningful EDC values.

Molecular synthons for accurate structural determinations: the equilibrium geometry of 1-chloro-1-fluoroethene.

The equilibrium structure for 1-chloro-1-fluoroethene is reported. The structure has been obtained by a least-squares fit procedure using the available experimental ground-state rotational constants of eight isotopologues. Vibrational effects have been removed from the rotational constants using the vibration-rotation interaction constants derived from computed quadratic and cubic force fields obtained with the required quantum chemical calculations carried out by using both coupled cluster and density functional theory.

Study of the Vibrational Spectra and Absorption Cross Sections of 1-Chloro-1-fluoroethene by a Joint Experimental and Ab Initio Approach.

The gas-phase infrared spectra of 1-chloro-1-fluoroethene (geminal chloro-fluoroethene, ClFC═CH, 1,1-CHClF) were recorded at medium resolution in the range of 400-6400 cm, and the vibrational analysis led to revised assignments for the ν (A″ symmetry), ν (A' symmetry), and ν (A' symmetry) bands. Besides the fundamentals, all the most important spectral features were interpreted in terms of overtone and combination bands, thus obtaining an accurate description of the vibrational structure of ClFC═CH. Accurate measurements of absorption cross-sectional spectra were carried out, and integrated band intensity data were determined.