Thermal behaviour of poly(methyl methacrylate)/fullerene composite films

ABSTRACT

Poly(methyl methacrylate) films and poly(methyl methacrylate)/fullerene composite films were fabricated by casting from toluene solutions. The mass fraction of fullerene (C₆₀) was varied from 0.05–3?wt. %. The effect of the fullerene (C₆₀) content on the thermal degradation parameters of the composite films was evaluated by thermogravimetric (TG) analysis. It was found that the incorporation of C₆₀ improved the thermal stability of the polymers. The films eventually decomposed in three stages. Incorporation of fullerene caused a change in the distribution of mass loss over the stages of degradation in comparison with the pristine polymer. Using differential scanning calorimetry (DSC), the phase transitions from the glassy state to the elastic one was studied for the examined polymeric materials. New data relating to the effect of C₆₀ on the glass transition temperature of composites with low weight fractions of filler were obtained. Specifically, for films containing up to 0.1 wt. % of C₆₀, a single glass transition temperature was found, whereas for composites with a higher concentration of filler, two glass transition temperatures were recorded.     

Via Kundalini: Psychosomatic excursions in transpersonal psychology

Abstract

A model of psychosomatic mysticism (PM) is proposed that reintroduces the body into transpersonal psychology. The argument for PM develops links between transpersonal psychology and neuroimmunology and includes scientific notions of the mind as embodied not just in the brain but more widely throughout the body, as well as the comparative analyses of perspectives on the body in various spiritual traditions. PM is used to examine how transpersonal psychology can integrate the body, thus meeting the goals of the clinician, the standards of the researcher, and the emerging needs of psychosomatic medicine. The core principles of PM are explicated, such as: 1) decentralized consciousness, 2) structural phenomenological correlations between the psyche and the body, 3) in‐depth understanding of energy as intentionality, and 4) the possibility of actualizing cosmic awareness in the individual psyche. Examples of the clinical use of psychospiritual practices of PM show practical applications of these principles. It is concluded that the studies of the embodied consciousness and subtle energies through PM can help to develop both transpersonal theory and applications.     

Emotional processing and emotional memory are modulated by interoceptive awareness

The ability to perceive interoceptive signals plays a central role in many theories of emotions. The present study was designed to investigate the relationship between interoceptive awareness and the conscious processing and memory of emotional information. Heart-rate changes were recorded during baseline and affective picture presentation in two groups of participants, differing in cardiac awareness. After a 60-minute break, a recognition task was conducted. Statistical analyses revealed significantly stronger heart-rate deceleration to pleasant and unpleasant stimuli in participants with high interoceptive awareness. In the subsequent picture recognition task, participants with high interoceptive awareness demonstrated a superior recall of pleasant and unpleasant pictures, while no differences were found between interoceptive awareness groups for pictures of neutral content. Our results demonstrate a strong relationship between the perception of cardiac signals and both the processing as well as the recognition of emotional stimuli. High interoceptive awareness was related to increased physiological responses to emotional stimuli and is therefore an important mediating variable when investigating cardiovascular reactivity both in healthy subjects as well as in clinical populations.     

Emotional intelligence in women caregivers with depressive symptoms

The emotional intelligence of a sample of 59 women caregivers (M age = 51.1 yr.) with depressive symptoms was compared with that of a sample of adult women from the general population (M age = 50.7 yr.). No group differences were observed on the Trait Meta-Mood Scale's three dimensions of emotional intelligence across age, socioeconomic status, or education level. Compared with the general population sample, the caregivers group scored significantly lower on Attention to Feelings and Mood Repair.     

Disparities in the moral intuitions of criminal offenders: The role of psychopathy

The present study examined whether and in what ways psychopathy is associated with abnormal moral intuitions among criminal offenders. Using Haidt et al.’s Moral Foundations Questionnaire, 222 adult male offenders assessed for clinical psychopathy reported their degree of support for five moral domains: Harm Prevention, Fairness, Respect for Authority, Ingroup Loyalty, and Purity/Sanctity. As predicted, psychopathy total score explained a substantial proportion of the variance in reduced support for Harm Prevention and Fairness, but not the other domains. These results confirm that psychopathy entails a discrete set of moral abnormalities and suggest that these abnormalities could potentially help to explain the characteristic antisocial behavior of individuals with psychopathy.     

Dissociable contributions of the left and right posterior medial orbitofrontal cortex in motivational control of goal-directed behavior

Several findings from both human neuroimaging and nonhuman primate studies suggest that the posterior medial orbitofrontal cortex (OFC) may be critical for the motivational control of goal-directed behavior. The present study was conducted to clarify the role of the left and right posterior medial OFC in that function by examining the effects of focal unilateral lesions to this region on the performance on an incentive working memory task. The study covered patients who had undergone surgery for an ACoA aneurysm and normal control subjects (C). The patients were subdivided into three groups: those with resection of the left (LGR+) or right (RGR+) posterior part of the gyrus rectus, and without such a resection (GR−). Participants performed a 2-back working memory task under three motivational conditions (penalty, reward, and no-incentive). The C group performed worse in the penalty condition and better in the reward condition as compared to the no-incentive condition. Similar results were obtained for the GR− group. Performance of the LGR+ group did not depend on incentive manipulations, whereas the RGR+ group performed better in both the penalty and reward conditions than in the no-incentive condition. The results show that the posterior medial OFC is involved in the motivational modulation of working memory performance. Our findings also suggest that the left posterior medial OFC plays a crucial role in this function, whereas the right posterior medial OFC is particularly involved in the processing of the punishing aspect of salient events and it probably mediates in guiding behavior on the basis of negative outcomes of action.     

Subjective Well-Being of Beijing Taxi Drivers

This study investigates subjective well-being among a sample of Beijing taxi drivers in the lead up to the 2008 Beijing Olympic Games using the Personal Wellbeing Index (PWI). The specific aims of this study are (a) investigate the psychometric properties of the PWI in this unique population; (b) ascertain whether Beijing taxi drivers are satisfied with their lives; and (c) examine whether the responses to the PWI from participants falls within the narrow range predicted by the ‘Theory of Subjective Wellbeing Homeostasis’. The PWI demonstrated good psychometric properties and was consistent with previous studies for Western and non-Western samples. The data revealed a moderate level of subjective well-being (PWI score = 61.1). While Beijing taxi drivers work long hours for low wages, the PWI was nonetheless within the normative range predicted for Chinese societies by the ‘Theory of Subjective Wellbeing Homeostasis’. The results suggest that the homeostatic mechanism is fairly resilient, even when the individual leads relatively a hard life based on objective indicators. Specifically, for Beijing taxi drivers, it appears that external, buffers such as personal relationships and feeling part of the community, act to assist the homeostatic system.     

Psychometric properties and dimensional structure of the Spanish adaptation of the Coping Inventory for Competitive Sport

The purpose of this study was to adapt and validate a Coping Inventory for Competitive Sport (ISCCS), establishing its psychometric properties and its dimensional structure. Participants were 306 athletes from different sports, aged between 14 and 28 years (45.7% males and 54.3% females), who completed the ISCSS along with other measures of constructs theoretically related to coping. Factor analysis identified eight factors that merged in three high-order dimensions representing task-oriented coping, emotion-oriented coping and disengagement-oriented coping. The factors showed appropriate reliability (Cronbach alpha and factor correlations), convergent validity (correlations with COPE Inventory scales) and concurrent validity (correlations with CSAI-2 and PANAS scales). It is concluded that the Spanish version of the ISCCS has proved to be a valid and reliable instrument to identify and assess competitive coping strategies, allowing psychological intervention to improve athletes' performance.     

Gender‐Related Psychological Characteristics and Situational Determinants of Psychophysiological Stress Reactivity1

This study examined the influence of gender‐related psychological characteristics and situational demands on physiological and affective responses to stressful tasks. While physiological and affective responses were monitored, 44 medical students (26 men, 18 women) performed an emotion‐oriented speech task and an action‐oriented speech in a counterbalanced design. Conventionally masculine instrumental and feminine expressive characteristics were measured using the Personal Attributes Questionnaire. Systolic blood pressure and respiratory reactions to the action‐oriented task were positively associated with expressivity. Expressivity was also associated with greater subjective tension during the action‐oriented task, and with perceptions of greater task difficulty. The results are consistent with the notion that physiological and affective stress reactions in men and women are determined in part by traditionally gender‐related psychological characteristics, with greater reactions when the situational demands are not congruent with preferred modes of behavior.