10 research outputs found
Problematic Facebook use and problematic video gaming as mediators of relationship between impulsivity and life satisfaction among female and male gamers
Over the past few decades, many new technologies have emerged, such as portable computers, the internet and smartphones, which have contributed to improving the lives of individuals. While the benefits of these new technologies are overwhelmingly positive, negative consequences are experienced by a minority of individuals. One possible negative aspect of new technologies is their problematic use due to impulsive use which may lead to lower life satisfaction. The present study investigated the mediating role of problematic video gaming (PVG) and problematic Facebook use (PFU) in the relationship between impulsivity dimensions and life satisfaction as well as the relationship between impulsivity dimensions and problematic behaviors. Additionally, the potential impact of gender differences was also examined. The study comprised 673 gamers (391 females) aged 17–38 years (M = 21.25 years, SD = 2.67) selected from 1365 individuals who completed an offline survey. PFU was assessed using the Facebook Intrusion Scale, and PVG was assessed using the nine-item Internet Gaming Disorder Scale–Short-Form (IGDS9-SF). Impulsivity dimensions such as attention, cognitive instability, motor, perseverance, self-control, and cognitive complexity were assessed using the Barratt Impulsiveness Scale (BIS-11), and life satisfaction was assessed using the Satisfaction With Life Scale (SWLS). Depending on the specific impulsivity dimension, findings showed both positive and negative relationships between impulsivity and life satisfaction. Attention and perseverance subtypes of impulsivity were primarily associated with problematic behaviors. Additionally, cognitive complexity was associated with PFU among female gamers, whereas cognitive instability was associated with PVG among male gamers. Additionally, PVG was primarily associated with lower life satisfaction. However, there was no mediation effects between impulsivity dimensions and life satisfaction via PFU or PVG. These findings provide a better understanding of the relationship between problematic behaviors, life satisfaction, and impulsivity among gamers and the differences between male and female gamers
Dynamic of the genetic structure of bacterial and fungal communities at different developmental stages of Medicago truncatula Gaertn. cv. Jemalong line J5
Molecular marker to identify the fungus gnat, Bradysia sp. (Diptera: Sciaridae), a new pest of Welsh onion and carrot in Japan
Post-infection activity of fungicides against Phytophthora infestans on tomato (Solanum lycopersicum L.)
Abstract Late blight caused by Phytophthora infestans
is the most devastating disease of tomato (Solanum lycopersicum
L.) and causes important economically losses
if not properly controlled. Control is achieved mainly by
preventive fungicide applications. However, even if curative
applications are discouraged because they increase the
risk of resistance development in the target pathogens, in
practice fungicides may be applied also when the disease
is already present, a situation that commonly occurs in the
field. The aim of this work was to study the curative activity
of several fungicides toward P. infestans to determine
their efficacy when applied after the infection process. Nine
trials were performed in greenhouse using potted tomato
plants that were treated 24 h after inoculation. Disease
severity was assessed three times from the development
of the symptoms on the untreated plants and data analysed
using a linear mixed model. Differences in post-infection
control between the different chemical classes were found.
Metalaxyl-M and cymoxanil showed the best curative
activity while among the CAA fungicides, a good efficacy
was expressed by dimethomorph. Interestingly, evidence of
synergy between active ingredients having different modes
of action was observed such as in the mixtures containing
dimethomorph + ametoctradin, dimethomorph + pyraclostrobin
and fosetyl-Al + propamocarb. This study provided
useful information on the post-infection activity of some
fungicides used to control tomato late blight and should be
taken into account to perform more in depth studies at the field level and to improve the management strategies of the
disease