Search results for "Trial"
showing 10 items of 10525 documents
Electrochemical treatment of real wastewater with low or high conductivity
2018
In the last years, many efforts have been devoted to the development of electrochemical processes for the effective treatment of wastewater contaminated by organic pollutants resistant to conventional biological processes and/or toxic for microorganisms [1–5]. It was shown that some electrochemical approaches, including the direct anodic oxidation at suitable anodes such as boron-doped diamond (BDD) and/or electro-Fenton (EF) at suitable operating conditions and cells [1–6] can allow to treat effectively a very large number of organic pollutants. However, most of the investigations were performed using synthetic wastewater. Hence, it is now mandatory to study the problems connected to the p…
I mulini ad acqua: dalla conservazione statica alla pratica sistemica
2013
I mulini di Polizzi: dalla conservazione statica alla pratica sistemica. Il sistema tradizionale di molitura con macine azionate dall'energia idraulica, diffuso in tutto il Mediterraneo, è presente molti Comuni della provincia di Palermo, ed è rimasto in uso fino al secondo dopoguerra. Si tratta di strutture produttive a ruota orizzontale; In genere diversi mulini sorgono in successione lungo lo stesso corso d'acqua, costituendo così un sistema. Sono queste le caratteristiche peculiari della “flomaria molendinorum” nel territorio di Polizzi Generosa: una vera e propria scalinata di impianti idraulici ancora visibili nel paesaggio odierno, concentrazioni testimoniate fin dal XII secolo. All'…
Levels and Potential Health Hazards of Chlorinated Pesticidesin Surface Water Samples of Charsadda Area of Pakistan Using SPME-GC-ECD Technique
2021
In the present study, we determined the levels of chlorinated pesticide residues in surface water samples collected from the Charsadda district (KPK, Pakistan). SPME-GC-ECD with COMBI PAL CTC autosampler was used for extraction and analysis of 20 organochlorine pesticides in the collected water samples. For maximum efficiency of the SPME procedure, several parameters were studied, including the extraction and desorption time of the fiber, solution pH, agitation of samples, and stirring speed, etc. This method showed good liner response, with R2 values in the range of 0.9887 to 0.9999 for all pesticides. This method also provided good percent recoveries at 1 µg L−1 (87.5 to 106.0%) and at 2 …
Uncover : Aiap women in design Award : AWDA 3-4
2022
UNCOVER è un progetto polifonico che descrive le proposte di studentesse, professioniste e ricercatrici selezionate nella terza e quarta edizione del premio Aiap Women in Design Award e insieme raccoglie riflessioni teoriche, che affrontano attraverso la lente del design i temi dei diritti e del lavoro femminile, e più in generale delle disparità in ogni ambito. Ai saggi e ai progetti visuali si affiancano le interviste con persone impegnate nei più svariati campi – economia, comunicazione, giornalismo, politica, formazione, arte, volontariato, istituzioni. Un volume non convenzionale, che prova a “scoprire” non solo progetti di comunicazione visiva da ogni parte del mondo, ma anche sto…
Psychological contract profiles among permanent and temporary agency workers
2016
Purpose– Based on the psychological contract (PC) theory, the purpose of this paper is to identify PC profiles, differentiating between permanent and temporary agency workers (TAW). Moreover, the authors analyzed whether different profiles presented different levels of work engagement.Design/methodology/approach– A cross-sectional survey data analysis of 2,867 workers, of whom 1,046 were TAW, was analyzed using latent profile analyses.Findings– Four PC profiles were identified, which differed quantitatively in terms of the overall dimension levels (i.e. balanced, relational and transactional) for PC (i.e. content and fulfillment). ANCOVAs showed that the relational/balanced dominant and tra…
Effects of a Job Crafting Intervention Program on Work Engagement Among Japanese Employees: A Randomized Controlled Trial
2020
Objective The current randomized controlled trial investigated the effectiveness of a job crafting intervention program on work engagement as the primary outcome and job crafting as the secondary outcome among Japanese employees. Methods Participants who met the inclusion criteria were randomly assigned to an intervention group (n = 138) or a control group (n = 143). The job crafting intervention program provided only to the intervention group consisted of two 120-minute group sessions with e-mail or letter follow-up. Outcomes were assessed at baseline and at 3-month and 6-month follow-up in both groups. Results In the total sample, the job crafting intervention program showed a non-signifi…
The Path from Ethical Organisational Culture to Employee Commitment : Mediating Roles of Value Congruence and Work Engagement
2016
Following the Job Demands-Resources model’s motivational process, this study investigates the role of person-organisation fit and work engagement as mediating processes between ethical culture and employee commitment, where ethical culture is seen as an organisational resource. It was expected that the stronger the ethical values and practices are experienced to be, the more compatible employees feel with the organisation. A good person-organisation fit was further hypothesised to act as a personal job resource for the employees, who would consequently experience higher work engagement leading to stronger affective commitment and less turnover intentions. The study used questionnaire data g…
Back to Basics: The Relative Importance of Transformational and Fair Leadership for Employee Work Engagement and Exhaustion
2016
This study contributes to the literature on the supervisors’ role in employee well-being by drawing on two separate lines of research: transformational leadership and organizational justice. The purpose of the study was to investigate the unique contributions of transformational and fair leadership (justice behaviours of supervisors) on work engagement and exhaustion among employees within the framework of the Job Demands-Resources model (Bakker and Demerouti, 2007). In determining the unique contributions, we additionally acknowledged the role of work characteristics. A questionnaire study was conducted among Finnish municipal employees in a variety of occupations (N = 333, 87% women). The…
La organización del trabajo por proyectos: La fábrica de la precariedad laboral
2019
The project-based organization, considered as a radical reorganization of work around one or more simultaneous projects, is nowadays widespread in large companies and public administrations. According to the managerial way of thinking, this system would be virtuous: by giving more autonomy to the employees in the act of production and by developing their skills through mobility and interdisciplinarity of work teams, it would be able to arouse their full commitment. This study confirms in some way how this opinion has been imposed, but at the expense of precarious working conditions, increasing the dedication of employees and silencing any form of criticism. The research is based on a review…
Envy in the Workplace: A Systematic Review of the Past Five Years
2020
In recent years, interest in studying envy at work has grown. Based on a previous review on envy and jealousy at work, the objective of this paper is to review and systematize the knowledge about this topic provided by empirical research in the past five years. After the search in scientific databases, establishing exclusion and inclusion criteria and literature coding, 32 papers were selected. The results show researchers’ growing interest in studying benign envy and its consequences and exploring new variables to explain envy in the workplace. Social comparison theory and cognitive appraisal theory are the two main theoretical frameworks used in the studies reviewed. The role of the leade…