Search results for "Positive"

Inhibitory Activity and Chemical Characterization ofDaucus carotasubsp.maximusEssential Oils

2017

The essential oils (EOs) of green seeds from Daucus carota subsp. maximus growing wild in Pantelleria Island (Sicily, Italy) were characterized. EOs were extracted by steam distillation, examined for their inhibitory properties against food-borne Gram-positive and Gram-negative bacteria and analyzed for the chemical composition by gas chromatography (GC) and mass spectrometry (MS). Undiluted EOs showed a large inhibition spectrum against Gram-positive strains and also vs. Acinetobacter spp. and Stenotrophomonas maltophilia. The minimum inhibition concentration (MIC) was in the range 1.25 – 2.50 μl/ml for the most sensitive strains. The chemical analysis indicated that D. carota subsp…

Essential oil components of orange peels and antimicrobial activity

2016

In this study, the orange peel of 12 cultivars of Citrus sinensis from central-eastern Sicily was employed to obtain essential oils and extracts. The ones were extracted through steam distillation, the others through extraction in hexane. Chemical constituents were evaluated in terms of qualitative and quantitative analyses by gas chromatography/mass spectrometry. Fifty-four components were identified in the steam essential oils and 44 in the extracts. In all the cultivars, the main component is d-limonene (73.9–97%); discrete percentages of linalool, geraniol and nerol were also found. Cluster analysis based on essential oils composition showed a certain degree of affinity between cultivar…

Nanostructured PbO2 electrode for lead-acd batery

2014

A Blockchain-based Platform for Positive Energy Districts

2022

The reduction of climate change effects (mitigation) is now mainly driven by the limitation of CO2 emissions which is currently becoming increasingly necessary and urgent to achieve. In this context, within the past Horizon 2020 program, the Urban Europe Joint Programming Initiative aimed to promote the development and deployment of at least 100 Positive Energy Districts by 2025. The latter are flexible, energy-efficient urban areas or groups of buildings that produce zero net CO2 emissions and actively manage annual renewable energy surplus production at the local or regional level. As they are connected to the electric power system, Positive Energy Districts have the ability to offer flex…

The effects of mental rotation on computational thinking

2019

Abstract Although several investigations of spatial reasoning and mental rotation skills have been conducted in research areas linked to STEM education, to the best of our knowledge, few of these studies have examined the relationship between spatial reasoning and computational thinking. Given this gap in the literature, the present study investigates the role and action of spatial reasoning, and specifically the effects of mental rotation on computational thinking within an embodied and enacted perspective. To achieve this, we carried out a study involving 92 students in five primary-school classes (1st grade - 5th grade). The findings reveal a positive correlation between computational th…

Hart’s blind spot. The missing piece in The Concept of Law

2014

Al inicio de El Concepto de Derecho, Hart sugiere una asimilación errónea entre conducta que es «no opcional» y conducta que es «obligatoria» (i. e. conducta que o es forzada o sometida a una obligación). Esta asimilación vicia el argumento del libro en su conjunto, llevándole a Hart a descuidar las diferentes vías en las que el derecho monitorea, corrobora o constituye relaciones de poder. Es cierto y evidente que en The Concept of Law la atención se dedica a los poderes normativos, legales. Sin embargo, el poder social bruto, y las relaciones del derecho con él —el papel del derecho como una pieza en la maquinaria de los poderes sociales— están ampliamente ignorados. Éste es, de alguna ma…

Relationship of Illness Severity with Health and Life Satisfaction in Patients with Cardiovascular Disease: The Mediating Role of Self-efficacy Belie…

2012

Guidelines for cardiovascular rehabilitation from different countries underline the importance of psychological factors in the achievement of improved clinical conditions and quality of life in patients with cardiovascular disease (CVD). Nevertheless, little research has been performed to identify the specific factors that greatly affect or foster patients' quality of life. The aim of the current study was to investigate the contribution of illness perceptions (IP) and self-efficacy beliefs (SE) on the impact exerted by illness severity on health and life satisfaction in patients with CVD undergoing a rehabilitation program. The study had a cross-sectional design and involved 116 patients (…

Personality and Optimal Experience in Adolescence: Implications for Well-Being and Development

2013

Past research has repeatedly identified relations between optimal experience—or flow—and well-being across the lifespan. In the attempt to identify the conditions favoring this experience, some studies took into account personality traits. While most of them operationalized flow in terms of intensity, we presently focused on perceived occurrence versus absence of flow. Specifically, we investigated the relations between flow occurrence, hedonic and eudaimonic well-being, activities associated with flow, and personality in adolescence. A group of 408 Italian teenagers (mean age = 17.31; SD = 1.13) were administered Flow Questionnaire, Satisfaction with Life Scale, Positive and Negative Affec…

The Effects of Short-Term Personal Goals on Subjective Well-Being

2015

Several studies demonstrated that subjective well-being is associated with goal value and perceived progress but their validity is affected by methodological biases. Moreover, a few have analysed the influence of short-term goals. We aimed to analyse how the levels of and changes in short-term goals progress and value influence subsequent levels of and changes in subjective well-being. This study adopted a three-wave longitudinal design with one-month intervals. Four hundred nine participants (186 males; age 19–71) reported their subjective well-being and their two most important goals and rated each over time in terms of value and progress. A latent difference score model revealed that lev…

Roma Youth

2021

This chapter highlights the importance of integrating research on positive youth development processes in the most disadvantaged youth groups. The authors focused on Roma youth, representing a prototypical low-status minority group. The first part of the chapter examines the demographics and the socially, politically, and ideologically challenging contexts in which Roma young people are embedded, taking into account the case of Italy, one European country with high anti-Roma sentiments. The second part summarizes the literature that deals with social-psychological factors underlying the developmental functioning and optimal well-being of Roma youth in spite of adversity. The third part focu…