Manganese Doping Promotes the Synthesis of Bismuth-based Perovskite Nanocrystals While Tuning Their Band Structures.

The doping of halide perovskite nanocrystals (NCs) with manganese cations (Mn2+ ) has recently enabled enhanced stability, novel optical properties, and modulated charge carrier dynamics of the NCs host. However, the influence of Mn doping on the synthetic routes and the band structures of the host has not yet been elucidated. Herein, it is demonstrated that Mn doping promotes a facile, safe, and low-hazard path toward the synthesis of ternary Cs3 Bi2 I9 NCs by effectively inhibiting the impurity phase (i.e., CsI) resulting from the decomposition of the intermediate Cs3 BiI6 product. Furthermore, it is observed that the deepening of the valence band level of the host NCs upon doping at Mn concentration levels varying from 0 to 18.5% (atomic ratio) with respect to the Bi content. As a result, the corresponding Mn-doped NCs solar cells show a higher open-circuit voltage and longer electron lifetime than those employing the undoped perovskite NCs. This work opens new insights on the role of Mn doping in the synthetic route and optoelectronic properties of lead-free halide perovskite NCs for still unexplored applications.

B-Site Co-Alloying with Germanium Improves the Efficiency and Stability of All-Inorganic Tin-Based Perovskite Nanocrystal Solar Cells.

Colloidal lead-free perovskite nanocrystals have recently received extensive attention because of their facile synthesis, the outstanding size-tunable optoelectronic properties, and less or no toxicity in their commercial applications. Tin (Sn) has so far led to the most efficient lead-free solar cells, yet showing highly unstable characteristics in ambient conditions. Here, we propose the synthesis of all-inorganic mixture Sn-Ge perovskite nanocrystals, demonstrating the role of Ge2+ in stabilizing Sn2+ cation while enhancing the optical and photophysical properties. The partial replacement of Sn atoms by Ge atoms in the nanostructures effectively fills the high density of Sn vacancies, reducing the surface traps and leading to a longer excitonic lifetime and increased photoluminescence quantum yield. The resultant Sn-Ge nanocrystals-based devices show the highest efficiency of 4.9 %, enhanced by nearly 60 % compared to that of pure Sn nanocrystals-based devices.

Halide Perovskite Nanocrystals for Next-Generation Optoelectronics.

Colloidal perovskite nanocrystals (PNCs) combine the outstanding optoelectronic properties of bulk perovskites with strong quantum confinement effects at the nanoscale. Their facile and low-cost synthesis, together with superior photoluminescence quantum yields and exceptional optical versatility, make PNCs promising candidates for next-generation optoelectronics. However, this field is still in its early infancy and not yet ready for commercialization due to several open challenges to be addressed, such as toxicity and stability. Here, the key synthesis strategies and the tunable optical properties of PNCs are discussed. The photophysical underpinnings of PNCs, in correlation with recent developments of PNC-based optoelectronic devices, are especially highlighted. The final goal is to outline a theoretical scaffold for the design of high-performance devices that can at the same time address the commercialization challenges of PNC-based technology.

Cognitive behavioural therapy and mindfulness for stress and burnout: a waiting list controlled pilot study comparing treatments for parents of children with chronic conditions.

BACKGROUND: Parents of children with chronic conditions often experience a crisis with serious mental health problems for themselves as a consequence. The healthcare focus is on the children; however, the parents often worry about their children's health and future but are seldom offered any counselling or guidance. AIM: The aim of this study was to investigate the effectiveness of two group-based behavioural interventions on stress and burnout among parents of children with chronic conditions. DESIGN, PARTICIPANTS AND SETTING: After a waiting list control period (n = 28), parents were offered either a cognitive behavioural (CBT, n = 10) or a mindfulness program (MF, n = 9). RESULTS: Both interventions decreased significantly stress and burnout. The within-group effect sizes were large in both interventions (CBT, g = 1.28-1.64; MF, g = 1.25-2.20). CONCLUSIONS: Hence, the results of this pilot study show that treating a group using either CBT or mindfulness can be an efficient intervention for reducing stress levels and burnout in parents of children with chronic conditions.

The Cognitive Profile of Persons with Obsessive Compulsive Disorder with and without Autism Spectrum Disorder.

INTRODUCTION: Autistic Spectrum Disorder (ASD) is often comorbid with Obsessive Compulsive Disorder (OCD). But to what extent can obsessional symptoms in individuals with ASD be considered "genuinely" comorbid OCD - or are there other mechanisms that are related to ASD? Which mechanisms in OCD with and without ASD share common features? People with ASD have a cognitive profile characterized by "mindblindness"; the antecedent is often referred to in terms of not knowing how to perform or behave and this is the cause of discomfort. This raises the question whether individuals with ASD and comorbid OCD share the same cognitive elements of responsibility interpretation and the same fear of causing harm as individuals who merely have OCD. OBJECTIVE: The aim of the present study is therefore to evaluate the extent of responsibility interpretation in individuals with OCD alone compared with people experiencing OCD in the context of ASD. METHODS: Two instruments, the Responsibility Attitude Scale (RAS) and the Responsibility Interpretations Questionnaire (RIQ), were administered to three groups of participants: (i) individuals diagnosed with OCD (n = 32); (ii) individuals with ASD and OCD (n = 19); and (iii) non-clinical control participants (n = 23). RESULTS: Results indicate significant differences in all measures of responsibility belief (interpretation of obsession and assumption of responsibility) between the OCD-only group and the two other groups. CONCLUSION: The conclusion is that OCD in people with ASD is not as "genuine" as in people with only OCD, according to cognitive behavioral theory of OCD.

Tailored Fabrication of Transferable and Hollow Weblike Titanium Dioxide Structures.

The preparation of weblike titanium dioxide thin films by atomic layer deposition on cellulose biotemplates is reported. The method produces a TiO2 web, which is flexible and transferable from the deposition substrate to that of the end application. Removal of the cellulose template by calcination converts the amorphous titania to crystalline anatase and gives the structure a hollow morphology. The TiO2 webs are thoroughly characterized using electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy to give new insight into manufacturing of porous titanium dioxide structures by means of template-based methods. Functionality and integrity of the TiO2 hollow weblike thin films were successfully confirmed by applying them as electrodes in dye-sensitized solar cells.

Cognitive Behavioural Therapy and Mindfulness for Health-Related Quality of Life: Comparing Treatments for Parents of Children with Chronic Conditions - A Pilot Feasibility Study.

BACKGROUND: Research on parents of children with chronic conditions has shown that this parent group frequently suffers from psychological problems such as deteriorating life quality and stress-related disorders. OBJECTIVE: The present feasibility study focuses on Health-Related Quality of Life (HRQOL) and life satisfaction of parents of children with chronic conditions. METHOD: The study was conducted using a repeated measures design and applied either group-based cognitive behavioural therapy (CBT; n = 10) or a group-based mindfulness programme (MF; n = 9). The study participants were wait-listed for six months. RESULTS: The results indicate improvements for participants in both treatment groups regarding certain areas of HRQOL and life satisfaction. After eight group therapy sessions, parents in the two treatment groups significantly improved their Mental Component Summary (MCS) scores as well as their scores on the mental subscales Vitality, Social functioning, Role emotional and Mental health. In addition, some of the physical subscales, Role physical, Bodily pain and General health, showed considerable improvement for the MF group. When testing for clinical significance by comparing the samples with mean values of a norm population, the MCS scores were significantly lower at pre-measurements, but no significant differences were observed post-measurement. For the Physical component summary (PCS) scores, a significantly higher score was observed at post-measurement when compared to the norm population. Moreover, the results indicate improvement in life satisfaction regarding Spare time, Relation to child and Relation to partner. CONCLUSION: The study concludes that CBT and mindfulness may have a positive effect on areas of HRQOL and life satisfaction.

Affective Changes During Cognitive Behavioural Therapy-As Measured by PANAS.

BACKGROUND: Previous researches have indicated that self-reported positive affect and negative affect is changing in a healthy direction during Cognitive Behavioural Therapy (CBT). OBJECTIVE: The aim of the present study was to examine how affective personality is related to psychopathology before and after CBT. METHOD: A group of clients (n = 73) was measured before and after CBT, differentiated by their problem areas at pre-therapy (i.e., depressive, anxious and mixed). RESULTS: After therapy, clients experienced higher positive affect (p < .02, d=0.66), lower negative affect (p < .001, d=0.98) and there was a significant change in the distribution of affective personality regardless of problem area, χ2 = 8.41, df = 3, two-tailed p = .04, 99% CI [0.03, 0.04]. The change in the distribution was largest for the two most relevant personality types, self-actualization and self-destructive affective personality. CONCLUSION: Results indicate that CBT can achieve changes in affect and affective personality.

Effectiveness of cognitive behavioral therapy on health-related quality of life: An evaluation of therapies provided by trainee therapists.

The present study was carried out to examine the treatment effect of cognitive behavioral therapy provided by trainee therapists at a university clinic, focusing on health-related quality of life (HRQOL) optimism and symptoms. The study was conducted through a repeated measures design and included a treatment group (n = 21), which received cognitive behavioral therapy for an average of 10.7 therapy sessions and a control group (n = 14), that was put on a wait list for 8.6 weeks on average. After treatment, the treatment group improved significantly concerning general health (p = 0.028) and optimism (p = 0.027). In addition, clients improved in several areas within mental health and displayed some reduction in anxiety symptoms. Concurrently, the results also indicated some improvement within the control group, which may have been caused by the initial therapeutic contact, expectancy effects or spontaneous remission. The study concluded that cognitive behavioral therapy provided by trainee therapists may have a positive effect on areas within HRQOL and optimism.

Modified CBT using visualization for Autism Spectrum Disorder (ASD), anxiety and avoidance behavior--a quasi-experimental open pilot study.

In recent studies it has been suggested that Cognitive Behavior Therapy (CBT) is beneficial to people with Autism Spectrum Disorder (ASD) but that the method needs to be modified in relation to their cognitive profile. The aim of this study is to measure the effect of modified CBT, that is, using visualized language throughout the entire session for clients with ASD and anxiety and avoidance behavior. The modification of CBT in this study consists of focusing on CBT protocols for anxiety disorders and depression, while visualizing and systematizing "the invisible" in the conversation, in order for the clients to understand the social, cognitive and emotional context of self and others and how they should interact to avoid misunderstandings. ASD clients may need help to detect the invisible code of social interaction and communication. The level of anxiety and the frequency of target behavior were measured. Four assessments were made, two at the pre-assessment, and one in mid-therapy and end of therapy respectively. Generally, results suggest no improvement during pre-treatment period but a significant improvement during treatment. The values of the clients' psychological, social and occupational ability to function improved on the Global Function Rating scale. The preliminary conclusion of this pilot study indicates that the use of visualized language throughout the CBT therapy sessions is a promising modification of current CBT protocols for individuals with ASD. After manualization, larger studies with randomized controlled study designs can replicate or challenge these results.

The first 38 methadone maintenance treatment patients in Stockholm: 15-year follow-up with a main focus on detoxification from methadone.

BACKGROUND/AIMS: The present study investigated the first 38 methadone maintenance treatment (MMT) patients in Stockholm. The aim was: (i) to investigate the possible predictive factors for successful treatment termination, and (ii) the long-term outcome effects and life situation of MMT patients and those who terminated the treatment. METHODS: The patients were interviewed at the start and approximately 15 years later, and divided into four groups: (1) no withdrawal attempts, (2) forced to stop the treatment, (3) successful tapering and (4) non-successful tapering. RESULTS: The predictive factor found that Group 1 showed a lower life quality compared with Groups 3 and 4. Fifteen years later, the life situations of Groups 3 and 4 were significantly more stable. Also the subjective well-being in Group 3 was significantly higher. Over all, Group 2 showed significantly more illicit drug use compared with Group 3. The social life situation was significantly improved for all patients during the 15 years. CONCLUSION: This study confirms our earlier findings that the ultimate goal of MMT for the motivated patients with good progress should be an opiate-free life. The life situation and subjective well-being seems to be higher after successful termination of MMT.

Do Athletes Have More of a Cognitive Profile with ADHD Criteria than Non-Athletes?

The current study investigates the possibility that athletes have more parallel ADHD symptoms than non-athletes. High-level youth sport athletes were compared with non-athletes in leisure time (i.e., sport) and in the school in ADHD symptoms. Athletes and students were evaluated by a trained psychotherapist using Adult ADHD Self-Report Scale (ASRS) on activities at school and during activities in leisure/sports time. They also filled in the Autism Spectrum Questionnaire (AQ) as a self-report assessment. Results showed significant differences in ASRS-scores for athletes in school and in their sport, with high scores in school and low scores in sport. No differences were found in AQ between the groups. The findings indicate that many athletes might display a cognitive profile of parallel of ADHD criteria. Future research needs to further investigate potential benefits of the cognitive profile in athletes and how they handle different contexts including sport and school settings.

Personality traits and mental health of severe drunk drivers in Sweden.

The present study was intended to investigate personality characteristics and mental health of severe driving under influence (DUI) offenders in a Swedish cohort. More specifically the aim was to investigate the personality traits as assessed by The NEO personality inventory (NEO-PI-R) and aspects of mental health as assessed by the symptom checklist (SCL-90) as compared to the general population. The subjects were 162 severe DUI offenders (with the BAC >0.099%) with an age range of 18-88 years, 143 males and 19 females. It was found that the openness to experience and conscientiousness scales of NEO-PI-R differentiated Swedish DUI offenders from Swedish norm population. The differences between the DUI group and the general population on the on SCL-90 scales were all significant except on the Hostility scale. Two main subtypes of DUI offenders identified were roughly comparable to types I and II alcoholics, as in Cloninger's typology. Among all the scales used (personality traits, psychiatric comorbidity and alcohol use), the only factor that was predictive for future relapses to drunk driving was the factor of depression.

Benzodiazepine tapering: a prospective study.

BACKGROUND: Benzodiazepines (BZD) are the most widely used sedative-hypnotics, and evidence is rapidly accumulating suggesting potential BZD dependence, association of chronic use with adverse effects and a definite abstinence syndrome produced by withdrawal. AIMS: The present investigation followed prospectively long-term BZD users over 1 year following graded BZD withdrawal in terms of clinical and withdrawal symptoms. METHODS: Clinical symptoms were measured by the Comprehensive Psychopathological Rating Scale (CPRS) and by the Newcastle Anxiety and Depression Diagnostic Index (NADDI) in a sample of BZD users over a 50-week period following graded BZD withdrawal. RESULTS: The results showed that the frequency and severity of clinical symptomatology measured by both scales significantly decreased over time. A detailed analysis of possible patterns of symptoms on both scales revealed four patterns: 1) a gradual decrease over the 50-week time period; 2) an increase in the severity of symptoms at the onset of tapering and a decrease in severity post-tapering; 3) an increase in the severity of symptoms 4 weeks after the cessation of BZD tapering; and 4) no change over the 50-week time period. Rate of BZD withdrawal was associated with CPRS ratings of global illness at admission and at end of treatment, but was not associated with duration or dosage of BZDs, type of BZD, prescriptive and/or non-prescriptive drug use prior to admission, marital status, sex or age. CONCLUSIONS: The results of the present study provide a detailed picture of the pattern of symptoms, their time course and multidimensional determinants of the BZD withdrawal symptoms.

Psychological inflexibility explains distress in parents whose children have chronic conditions.

Experiential avoidance, cognitive defusion, and mindfulness have all been associated with psychological disorders and well-being. This study investigates whether they predict psychological distress, i.e., symptoms of burnout, depression, stress and anxiety, in parents of children with chronic conditions. We hypothesized that these factors would exhibit a large degree of common variance, and that when compared to mindfulness and defusion, experiential avoidance on its own would predict a larger proportion of unique variance. 75 parents of children with chronic conditions having burnout symptoms who participated in an intervention study completed measures of burnout, stress, anxiety, depression, experiential avoidance, cognitive defusion, and mindfulness at the beginning of the intervention study (baseline). We ran several regression analyses to assess the predictive ability of these different constructs. Experiential avoidance on its own accounted for 28-48% of the variance in different psychological symptoms. Cognitive defusion and mindfulness did not make a significant contribution to explaining burnout, stress and anxiety, but cognitive defusion contributed to explaining depression. The results confirmed our hypothesis, supporting research on the importance of psychological flexibility as a central factor in understanding the occurrence of psychological distress.

Photo-antimicrobial efficacy of zinc complexes of porphyrin and phthalocyanine activated by inexpensive consumer LED lamp.

The properties and antimicrobial efficacies of zinc complexes of tetrakis(N-methylpyridinium-4-yl) tetraiodide porphyrin and tetrakis(N-methylpyridinium-4-yl) tetraiodide phthalocyanine impregnated to paper were evaluated. Photo-inactivation of microbes using inexpensive consumer light-emitting diode lamp was assessed on surface of dyed papers. Antimicrobial experiments of phthalocyanine-dyed paper by live cell assessment through colony forming units counting demonstrated 3.72 and 4.01 log reduction against Escherichia coli (E. coli) and Acinetobacter baylyi (A. baylyi) respectively after 1 h of illumination with 35 mW/cm2 light. The porphyrin-dyed paper exhibited 1.66 and 2.01 log reduction in colony forming units against E. coli and A. baylyi respectively after 1 h exposure with 4 mW/cm2 light. Both dyed papers were photo-stable after 64 h of continuous exposure with 42 mW/cm2 light, while phthalocyanine-dyed paper exhibited superior leaching stability in phosphate-buffered saline.

Building Up Colors: Multilayered Arrays of Peryleneimides on Flat Surfaces and Mesoporous Layers.

Novel monoisomeric perylene imide derivatives with terpyridinyl and pyrrolidinyl substituents were synthesized and deposited onto solid substrates, such as a thin film of Al2 O3 and mesoporous TiO2 nanoparticle layer, by using a simple dip-by-dip method. Arrays of up to 33 layers were built on Al2 O3 . In the case of mesoporous TiO2 , the interstitial volume between the particles was filled up with dye assemblies. Deposition could produce either layers of microcrystals or molecular layers if an appropriate washing procedure was used. The resultant arrays were studied by means of scanning electron microscopy, X-ray photoelectron spectroscopy measurements, and UV/Vis absorption.

Syntheses, Charge Separation, and Inverted Bulk Heterojunction Solar Cell Application of Phenothiazine-Fullerene Dyads.

A series of phenothiazine-fulleropyrrolidine (PTZ-C60) dyads having fullerene either at the C-3 aromatic ring position or at the N-position of phenothiazine macrocycle were newly synthesized and characterized. Photoinduced electron transfer leading to PTZ(•+)-C60(•-) charge-separated species was established from studies involving femtosecond transient absorption spectroscopy. Because of the close proximity of the donor and acceptor entities, the C-3 ring substituted PTZ-C60 dyads revealed faster charge separation and charge recombination processes than that observed in the dyad functionalized through the N-position. Next, inverted organic bulk heterojunction (BHJ) solar cells were constructed using the dyads in place of traditionally used [6,6]-phenyl-C61- butyric acid methyl ester (PCBM) and an additional electron donor material poly(3-hexylthiophene) (P3HT). The performance of the C-3 ring substituted PTZ-C60 dyad having a polyethylene glycol substituent produced a power conversion efficiency of 3.5% under inverted bulk heterojunction (BHJ) configuration. This was attributed to optimal BHJ morphology between the polymer and the dyad, which was further promoted by the efficient intramolecular charge separation and relatively slow charge recombination promoted by the dyad within the BHJ structure. The present finding demonstrate PTZ-C60 dyads as being good prospective materials for building organic photovoltaic devices.

Subpicosecond to Second Time-Scale Charge Carrier Kinetics in Hematite-Titania Nanocomposite Photoanodes.

Water splitting with hematite is negatively affected by poor intrinsic charge transport properties. However, they can be modified by forming heterojunctions to improve charge separation. For this purpose, charge dynamics of TiO2:α-Fe2O3 nanocomposite photoanodes are studied using transient absorption spectroscopy to monitor the evolution of photogenerated charge carriers as a function of applied bias voltage. The bias affects the charge carrier dynamics, leading to trapped electrons in the submillisecond time scale and an accumulation of holes with a lifetime of 0.4 ± 0.1 s. By contrast, slower electron trapping and only few long-lived holes are observed in a bare hematite photoanode. The decay of the long-lived holes is 1 order of magnitude faster for the composite photoanodes than previously published for doped hematite, indicative of higher catalytic efficiency. These results illustrate the advantages of using composite materials to overcome poor charge carrier dynamics, leading to a 30-fold enhancement in photocurrent.

Effectiveness of cognitive behavioral therapy: An evaluation of therapies provided by trainees at a university psychotherapy training center.

At the psychotherapy training center at Karlstad University, a study was carried out to examine the levels of symptom change and satisfaction with therapy in a heterogeneous population of clients treated using cognitive behavioral therapy (CBT) by less experienced trainee therapists with limited theoretical education. The clients received an average of 11 therapy sessions. The results suggested that CBT performed by less experienced trainee therapists can be effective. According to client estimations, a statistically significant reduction in symptoms, measured using the Symptoms Checklist, was achieved for seven of nine variables (p ≤ .006), as well as a significant increase in satisfaction with life (p ≤ .001). Also, the pre- and posttherapy measurements using the Montgomery-Åsberg Depression Rating Scale showed a statistically significant improvement in the clients' condition. According to the therapists' estimations, 64% (SD = 32.01) of the clients experienced a significant improvement in their condition. In addition, the results of a survey of client satisfaction demonstrated that the clients were very pleased with the therapy received. Also the therapists were, to a great extent, satisfied with the treatment process itself, including the supervision received, and very satisfied with the client alliance. A correlation analysis between the clients' perceived level of improvement and therapist satisfaction showed a strong correlation between the two variables (r = .50, p < .005). By including the Comparative Psychotherapy Process Scale (CPPS) in our study it was possible to measure trueness to therapy form. An analysis of the CPPS results confirmed that the form of therapy used at the training site was more strongly CBT than psychodynamic interpersonal treatment (p ≤ .001). The CBT subscale score indicated that the therapy was characteristic of CBT, confirming that the interventions used in the therapy belong to the CBT genre.