Non-conductive silicon-containing materials improve methane production by pure cultures of methanogens.

Conductive materials (CM) enhance methanogenesis, but there is no clear correlation between conductivity and faster methane production (MP) rates. We investigated if MP by pure cultures of methanogens (Methanobacterium formicicum, Methanospirillum hungatei, Methanothrix harundinacea and Methanosarcina barkeri) is affected by CM (activated carbon (AC), magnetite), and other sustainable alternatives (sand and glass beads, without conductivity, and zeolites (Zeo)). The significant impact of the materials was on M. formicicum as MP was significantly accelerated by non-CM (e.g., sand reduced the lag phase (LP) duration by 48 %), Zeo and AC (LP reduction in 71% and 75 %, respectively). Conductivity was not correlated with LP reduction. Instead, silicon content in the materials was inversely correlated with the time required for complete MP, and silicon per se stimulated M. formicicum's activity. These findings highlight the potential of using non-CM silicon-containing materials in anaerobic digesters to accelerate methanogenesis.

Ambivalence Resolution in Meaning Reconstruction Grief Therapy: An Exploratory Study.

In psychotherapy, ambivalence may be conceptualized as a conflict between two distinct motivations: one that is favorable to change (pro-change) and another that favors the maintenance of a problematic pattern (pro status quo). Previous studies identified two processes by which clients resolve this conflict: imposing the innovative part and silencing the problematic one (dominance), and establishing negotiations between the innovative and the pro status quo parts (negotiation). The present exploratory study examined ambivalence resolution in a sample of clients diagnosed with complicated grief. Results revealed that, in recovered cases, negotiation increases and dominance decreases from the beginning until the middle sessions of therapy and the opposite tendency is observed from the middle to the final sessions. Unchanged cases reveal an overall high proportion of dominance and an overall low proportion of negotiation. These results are partially divergent from those reported in previous studies with samples of clients diagnosed with major depression.

Ambivalence resolution in the Unified Protocol for Transdiagnostic Treatment of Emotional Disorders: An exploratory case study.

Patient ambivalence towards change is a central therapeutic target in the Unified Protocol for Transdiagnostic Treatment of Emotional Disorders (UP). However, we do not know if and how patients resolve ambivalence across the sessions and modules of the UP. Previous studies have identified two types of ambivalence resolution-dominance and negotiation-and different patterns of resolution for recovered and unchanged cases. Objectives: This exploratory single case study aimed to describe the frequency of observed ambivalence resolution strategies across UP sessions and evaluate the impact of distinct ambivalence resolution strategies on ambivalence. Method: Sixteen sessions of a recovered case were coded with observational measures of ambivalence and ambivalence resolution. Results: Observed ambivalence significantly decreased; dominance remained highly frequent across sessions, and negotiation increased from the beginning to the middle phase of treatment but not from the middle to the final phase. Negotiation was significantly associated with ambivalence reduction. Conclusion: The progression of ambivalence resolution strategies differed from previous studies with distinct therapeutic approaches; promoting negotiation between the different parts of the client's inner conflict across the whole therapy may be valuable in dealing with patient ambivalence in UP treatment.

Innovative moments in recovered cases treated with the unified protocol for transdiagnostic treatment of emotional disorders.

OBJECTIVE: Innovative moments (IMs) are moments in which the previous problematic pattern of meaning is challenged. Studies have shown that IMs are associated with good psychotherapy outcomes. A three-level hierarchy of IMs was observed in recent studies, with level 1 IMs being more elementary and levels 2 and 3 being more complex and associated with treatment success. However, studies with manualized protocol treatments are thus far lacking. This study analyzed the longitudinal progression of IMs in the Unified Protocol for Transdiagnostic Treatment of Emotional Disorders (UP) and explored its associations with changes in psychological distress. METHODS: Data were collected from a Portuguese university-based outpatient clinic and included 18 cases with positive outcomes. Nine sessions of each case were coded with the IM coding system (N=162). RESULTS: Multilevel analyses showed a significant increase in all IM levels across treatments. The decrease in psychological distress predicted an increase in level 2 IMs in the same session. CONCLUSION: The evolution of IMs is similar to what was found previously in other studies. Contrary to what was found in previous studies, IMs did not predict outcomes in the following session, whereas the reduction in psychological distress predicted the emergence of level 2 IMs.

Detoxification of Ciprofloxacin in an Anaerobic Bioprocess Supplemented with Magnetic Carbon Nanotubes: Contribution of Adsorption and Biodegradation Mechanisms.

In anaerobic bioreactors, the electrons produced during the oxidation of organic matter can potentially be used for the biological reduction of pharmaceuticals in wastewaters. Common electron transfer limitations benefit from the acceleration of reactions through utilization of redox mediators (RM). This work explores the potential of carbon nanomaterials (CNM) as RM on the anaerobic removal of ciprofloxacin (CIP). Pristine and tailored carbon nanotubes (CNT) were first tested for chemical reduction of CIP, and pristine CNT was found as the best material, so it was further utilized in biological anaerobic assays with anaerobic granular sludge (GS). In addition, magnetic CNT were prepared and also tested in biological assays, as they are easier to be recovered and reused. In biological tests with CNM, approximately 99% CIP removal was achieved, and the reaction rates increased ≈1.5-fold relatively to the control without CNM. In these experiments, CIP adsorption onto GS and CNM was above 90%. Despite, after applying three successive cycles of CIP addition, the catalytic properties of magnetic CNT were maintained while adsorption decreased to 29 ± 3.2%, as the result of CNM overload by CIP. The results suggest the combined occurrence of different mechanisms for CIP removal: adsorption on GS and/or CNM, and biological reduction or oxidation, which can be accelerated by the presence of CNM. After biological treatment with CNM, toxicity towards Vibrio fischeri was evaluated, resulting in ≈ 46% detoxification of CIP solution, showing the advantages of combining biological treatment with CNM for CIP removal.

Ambivalence Predicts Symptomatology in Cognitive-Behavioral and Narrative Therapies: An Exploratory Study.

Background: The identification of poor outcome predictors is essential if we are to prevent therapeutic failure. Ambivalence - defined as a conflictual relationship between two positions of the self: one favoring change and another one favoring problematic stability - has been consistently associated with poor outcomes. However, the precise relationship between ambivalence and clients' symptomatology remains unclear. Objective: This study aims at assessing ambivalence's power to predict symptomatology, using a longitudinal design. Methods: The complete 305 sessions of 16 narrative and cognitive-behavioral cases have been analyzed with the Ambivalence Coding System and outcome measures have been used for each session. Results: Ambivalence emerged as a significant predictor of subsequent symptomatology suggesting that ambivalence is not only related to treatment outcomes, but that it represents a strong predictor of subsequent symptomatology. Discussion: The implications of ambivalence's power to predict outcomes for research and clinical practice are discussed.

Ambivalence resolution in brief psychotherapy for depression.

Ambivalence in the process of psychotherapeutic change should be addressed and resolved if we are to avoid psychotherapeutic failure and promote sustained change. In this context, ambivalence can be defined as the cyclical conflictual relation between two opposed positions of the self: one expressed as an innovation, and a subsequent one expressed in a trivialization or rejection of the innovation (problematic position). This conflict may be resolved in two different ways: (a) the dominance of the innovative position and the consequent inhibition of the problematic one and (b) the negotiation between the innovative and the problematic positions. In this study, we sought to study the evolution of the dominance and the negotiation processes in recovered and unchanged cases; to analyse if different therapeutic models produce different results on the evolution of the dominance and negotiation processes, and finally, to study if these processes are predictive of ambivalence resolution. The complete sessions of 22 clinical cases of depression (6 cognitive-behavioural therapy, 10 narrative therapy, and 6 emotion-focused therapy cases) were independently coded for innovative moments, ambivalence, and ambivalence resolution. Results revealed that recovered cases had a progressively higher proportion of negotiation along treatment, whereas in unchanged cases, negotiation was virtually absent throughout treatment. Both dominance and negotiation were significant predictors of ambivalence reduction, however, negotiation had a higher impact than dominance. Overall, these results did not significantly differ for the 3 therapeutic models. The theoretical implications of these findings are discussed, and theoretical derived suggestions for clinicians are presented.

Ambivalence resolution in emotion-focused therapy: The successful case of Sarah.

Ambivalence can be understood as a cyclical movement between two opposing positions of the self: one expressed in a novelty-an innovative moment (IM)-and another one conveyed by a return to the maladaptive pattern. If not properly addressed and resolved during therapy, ambivalence can prevent change and lead to psychotherapeutic failure. Two processes of ambivalence resolution have been suggested: (1) the dominance of the innovative position and consequent inhibition of the problematic position and (2) the negotiation between both positions. OBJECTIVES: To empirically study both processes of ambivalence resolution in a successful case of emotion-focused therapy. METHOD: Sessions were independently coded with three coding systems-the IMs, the return to the problem and the ambivalence resolution. RESULTS: Ambivalence tended to be resolved from the initial to the final sessions. Although resolutions through dominance tended to decrease and resolutions through negotiation seemingly increased along treatment, dominance was, nonetheless, the most prominent process of resolution along the whole treatment. CONCLUSIONS: Although it has been suggested that integrating opposing parts of the self is a necessary process for psychotherapeutic success, a less integrative process of ambivalence resolution may also be an important resource along the process.

Three narrative-based coding systems: Innovative moments, ambivalence and ambivalence resolution.

Narrative and dialogical perspectives suggest that personal meaning systems' flexibility is an important resource for change in psychotherapy. Drawn from these theoretical backgrounds, a research program focused on the identification of Innovative Moments (IMs)-exceptions to the inflexible meaning systems present in psychopathological suffering-has been carried out. For this purpose, three process-oriented coding systems were developed: The IMs Coding System, the Ambivalence Coding System, and the Ambivalence Resolution Coding System. They allow, respectively, for the study of change, ambivalence, and ambivalence resolution in therapy. This paper presents these coding systems, the main findings that resulted from their application to different samples and therapeutic models, the main current and future lines of research, as well as the clinical applications of this research program.

Therapist interventions and client ambivalence in two cases of narrative therapy for depression.

AIM: We understand ambivalence as a cycle of opposing expressions by two internal voices. The emergence of a suppressed voice produces an innovative moment (IM), challenging the dominant voice, which represents the client's problematic self-narrative. The emergence of the IM is opposed by the dominant voice, leading to a return to the problematic self-narrative. This study analyzed therapist and client responses to each other in episodes of ambivalence. METHOD: The therapeutic collaboration coding system (TCCS) assesses whether and how the therapeutic dyad is working within the therapeutic zone of proximal development (TZPD) by examining client responses to therapist interventions. We applied the TCCS to episodes in which a good- and a poor-outcome client in narrative therapy expressed ambivalence. RESULTS: In both the good- and poor-outcome cases, the therapist responded to the emergence of ambivalence similarly, balancing challenging and supporting. The good-outcome case responded at the developmental level proposed by the therapist when challenged, while the poor-outcome case lagged behind the level proposed. DISCUSSION: This supports the theoretical explanation that the therapist did not match client's developmental level in the poor-outcome case, working beyond the client's current TZPD and contributing to the maintenance of ambivalence.

Non-suicidal self injury, psychopathology and attachment: a study with university students

Conducted with a community sample, this study first tested the hypothesis that the constant association of Non-Suicidal Self Injury (NSSI) with various psychopathological states may be overrepresented because many of the studies reporting these associations used clinical samples. Secondly, the study aimed to test the emotional regulation model of NSSI by exploring the functions, the affective antecedents and consequences of NSSI episodes and to understand this emotion regulation role of NSSI in the light of Attachment Theory by differentiating self-injurers and non-self-injurers on relevant romantic attachment dimensions. A third purpose of this study was to test the hypothesis that individuals currently performing NSSI could be differentiated on these dimensions from those who had ceased engaging in NSSI. Pursuing these purposes, 518 university students (171 males and 347 females), aged 17 to 62 years old completed the Self-Injury Questionnaire - Treatment Related (Claes & Vandereycken, 2007), the Brief Symptom Inventory (Derogatis, 1982) and the Adult Attachment Scale (Collins & Read, 1990). Individuals with NSSI scored significantly higher on all BSI subscales (all p < .001). Results also revealed the existence of significant differences between participants with and without NSSI on Anxiety (Z = -2.92, p < .01) and Comfort with Proximity (Z = -3.18, p < .01), and significant differences between past self-injurers and current self-injurers on Trust in Others (Z = -2.40, p < .05). These results are discussed by linking NSSI and Attachment Theory literatures (AU)

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Non-suicidal self injury, psychopathology and attachment: a study with university students.

Conducted with a community sample, this study first tested the hypothesis that the constant association of Non-Suicidal Self Injury (NSSI) with various psychopathological states may be overrepresented because many of the studies reporting these associations used clinical samples. Secondly, the study aimed to test the emotional regulation model of NSSI by exploring the functions, the affective antecedents and consequences of NSSI episodes and to understand this emotion regulation role of NSSI in the light of Attachment Theory by differentiating self-injurers and non-self-injurers on relevant romantic attachment dimensions. A third purpose of this study was to test the hypothesis that individuals currently performing NSSI could be differentiated on these dimensions from those who had ceased engaging in NSSI. Pursuing these purposes, 518 university students (171 males and 347 females), aged 17 to 62 years old completed the Self-Injury Questionnaire - Treatment Related (Claes & Vandereycken, 2007), the Brief Symptom Inventory (Derogatis, 1982) and the Adult Attachment Scale (Collins & Read, 1990). Individuals with NSSI scored significantly higher on all BSI subscales (all p < .001). Results also revealed the existence of significant differences between participants with and without NSSI on Anxiety (Z = -2.92, p < .01) and Comfort with Proximity (Z = -3.18, p < .01), and significant differences between past self-injurers and current self-injurers on Trust in Others (Z = -2.40, p < .05). These results are discussed by linking NSSI and Attachment Theory literatures.