The thermal dissociation/recombination reactions of the perfluoromethyl halides CF4↔CF3+F, CF3Cl↔CF3+Cl, CF3Br↔CF3+Br, and CF3I↔CF3+I are analyzed with respect to their transition (for increasing pressures) from second-order first-order dissociation (or third-order recombination). dependence this on temperature is documented. Practical aspects modelling falloff curves discussed.

Few studies have examined the relationship between posttraumatic stress disorder (PTSD), substance use disorder, and dissociation. We studied 77 women with current PTSD and substance dependence, classified into high- versus low-dissociation groups per the Dissociative Experiences Scale. They were compared on trauma- and substance-related symptoms, cognitions, coping skills, social adjustment, t...

Women survivors of rape are at an increased risk for posttraumatic stress disorder (PTSD). Traumatic dissociation has been identified as a precursor of PTSD. This study assessed the predictive potential of traumatic dissociation in PTSD and depression development.The study followed a longitudinal, prospective design. Ninety-seven female rape survivors were recruited from 2 clinics in Cape Town,...

Dissociation can be defined as a disruption in the usually integrated functions of consciousness, memory, identity, and perception environment. Previous studies have reported negative correlation between mindfulness dissociation. Some authors also suggested that mindfulness-based interventions may relevant psychotherapeutic tools to treat dissociative symptoms. According Bishop et al.’s model m...

Proline-rich proteins (PRPs), including collagens, complement 1q, and salivary PRPs, are unusually difficult to sequence by mass spectrometry, due to the high efficiency of cleavage at the amide bond on the N-terminal of proline residues and the consequently low relative abundance of fragment arising from cleavages at other amide bonds. To fully characterize these proteins by mass spectrometry,...

OBJECTIVE An intertwined relationship has been found between dissociative and psychotic symptoms, as the two symptom clusters frequently co-occur, suggesting some shared risk factors. Using a source monitoring paradigm, previous studies have shown that patients with schizophrenia made more errors in source monitoring, suggesting that a weakened sense of individuality may be associated with psyc...

Atrial dissociation is characterized by two sets of independent P waves on the electrocardiogram and two atrial beats independent of each other. One atrium is under the control of the dominant pacemaker (sinus node) which also controls the ventricles, while the other atrium or part of the other atrium is under the control ofan ectopic pacemaker, resulting in unilateral ectopic atrial rhythm, be...

A subset of vertices in a graph is called a dissociation set if it induces a subgraph with vertex degree at most 1. A dissociation set D is maximal if no other dissociation set contains D. The complexity of finding a dissociation set of maximum size in line graphs and finding a maximal dissociation set of minimum size in general graphs is considered.

Metalloenzymes preorganize the reaction environment to steer substrate(s) along the required reaction coordinate. Here, we show that phosphine ligands selectively facilitate protonation of binuclear silver hydride cations, [LAg2(H)](+) by optimizing the geometry of the active site. This is a key step in the selective, catalysed extrusion of carbon dioxide from formic acid, HO2CH, with important...