17 research outputs found
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The mediating effect of self-esteem, depression and anxiety between satisfaction with body appearance and problematic Internet use
Background and objectives: Given that dissatisfaction with bodily appearance can sometimes lead to the avoidance of personal contacts and the increase of internet use, this study examines this relationship. The direct role of dissatisfaction with bodily appearance along with the possible mediation effects of depression, anxiety and self-esteem were tested. Methods: A total of 694 participants completed an online questionnaire (58.5% male, mean age 21.5 years), containing measures on problematic internet use, depression and anxiety symptoms, self-esteem and satisfaction with body image. Path analyses were used to test direct and indirect effects. Results: Satisfaction with body appearance had a significant negative direct effect on problematic internet use among both sexes. Though, satisfaction with body appearance had a positive effect on self-esteem and negative on anxiety, neither self-esteem nor anxiety had a direct significant effect on problematic internet use. The effect of dissatisfaction with body appearance was mediated via the self-esteemâdepression path toward problematic internet use. Conclusions: Dissatisfaction with physical appearance seems to have a significant role in individualsâ immersing themselves in internet use
Rebiopszia Ă©s ismĂ©telt gefitinibkezelĂ©ssel elĂ©rt remissziĂł tĂŒdĆrĂĄkban
The authors present a case of a 81-year-old non-smoker woman who was diagnosed with extended, bilateral bronchial adenocarcinoma in 2008. Two years later the tumor showed marked progression. EGFR sensitizing mutation (exon 19 deletion) was detected and gefitinib treatment was started in March 2010. After 12 months of spectacular and complete remission and 8 months of slow progression docetaxel therapy was applied and yielded partial remission. When progression redeveloped rebiopsy was performed and revealed EGFR exon 19 deletion again. Gefitinib retreatment was introduced in February 2013 and resulted in partial remission with excellent clinical status. In March, 2014 the patient is still on gefitinib treatment without any signs or symptoms of lung cancer but with very slow radiological progression. The authors overview the most important theoretical and practical questions regarding rebiopsy and retreatment in lung cancer with EGFR-TKI therapy
Distribution of sulfur in power supply lignite from North Hungary
Abstract
The present article discusses the results of measurements carried out to assess the distribution of different sulfur types in lignite samples deriving from two opencast lignite mines near the villages of BĂŒkkĂĄbrĂĄny and Visonta. These mines ensure the continuous supply of fuel for one of Hungary's largest thermal power plant. According to our findings no significant differences could be identified between the samples of the two mines based on their total sulfur (St) content. Both lignite types were classified as coals with medium-sulfur content according to the system of Chou (1990). A majority of total sulfur is accumulated in lignite, while in the intercalated carbonaceous shale total sulfur is present in minor amounts. Usually the sequence of the distribution of sulfur among the different bond forms in lignite collected from opencast mine of Visonta is as follows: pyritic sulfur (Sp) > organic sulfur (Sorg) > sulfate sulfur (SSOorg4).
In the samples collected from Visonta and BĂŒkkĂĄbrĂĄny quantities of total sulfur were similar. However, some difference in their distribution among various sulfur types were noted. Although half of the samples were weathered and the amount of pyrite sulfur must have been higher in the weathered lignite of BĂŒkkĂĄbrĂĄny preceding the oxidation process, the sequence of the distribution of sulfur was likely as follows Sorg â„ Sp â„ SSO4
Evaluation of the efficiency of consolidants on Hungarian porous limestone by non-destructive test methods
Morphology and detachment mechanism of weathering crusts of porous limestone in the urban environment of Budapest
Psychometric properties of the Problematic Online Gaming Questionnaire Short-Form (POGQ-SF) and prevalence of problematic online gaming in a national sample of adolescents
The rise and growing popularity of online games has led to the appearance of excessive gaming that in some
cases can lead to physical and psychological problems. Several measures have been developed to explore the
nature and the scale of the phenomenon. However, few measures have been validated psychometrically. The
aim of the present study was to test the psychometric properties of the 12-item Problematic Online Gaming
Questionnaire Short-Form (POGQ-SF) and to assess the prevalence of problematic online gaming. Data collection
was carried out to assess the prevalence of problematic online gaming in a national representative adolescent
sample by using an offline (pen and pencil) method. A total of 5,045 secondary school students were assessed (51% male, mean age 16.4 years, SD = 0.9 years) of which 2,804 were gamers (65.4% male, mean age 16.4 years, SD = 0.9 years). Confirmatory factor analysis was applied to test the measurement model of problematic online gaming, and latent profile analysis was used to identify the proportion of gamers whose online game use can be considered problematic. Results showed that the original six-factor model yielded appropriate fit to the data, and thus the POGQ-SF has appropriate psychometric properties. Latent profile analysis revealed that 4.6% of the adolescents belong to a high risk group and an additional 13.3% to a low risk group. Due to its satisfactory psychometric characteristics, the 12-item POGQ-SF appears to be an adequate tool for the assessment of problematic
online gaming