Preservice teachers’ Internet addiction in terms of gender, Internet access, loneliness, and life satisfaction

Abstract The aim of this study is to investigate pre-service teachers' Internet addiction in terms of gender, Internet accessibility, loneliness and life satisfaction. Statistical analyses were completed on the data by the 247 preservice teachers that filled the surveys completely. According to findings, pre-service teachers' level of loneliness and Internet addiction scores is low while their life satisfaction scores are high. Male participants are more addicted to the Internet than female participants. Also those, males and females, who had Internet access, had more tendencies to be addicted to the Internet. There is evidence to indicate a positive correlation between loneliness and Internet addiction, and negative correlation between life satisfaction and Internet addiction. Based on the results several different suggestions are made for continuing research in this field

Right coronary artery originating from left anterior descending artery: a case report

Right Coronary Artery (RCA) originating from left anterior descending artery is a very rare congenital coronary artery anomaly. A 66-year-old man presented with hypertension and complaints of exertional chest pain. The angiography was performed. Aortic root angiography showed no coronary ostium orginating from the right sinus of valsalva. Right coronary artery was vizualized as anomalously originating from the midportion of left anterior descending artery. Severe stenosis were seen in ostium of anomalous right coronary artery, in midportion of left anterior descending and in midportion of circumflex artery. The patient was referred for coronary artery bypass grafting. The patient underwent coronary artery bypass surgery for three vessels. He was discharged home on postoperative day 7 without any complication. His echocardiogram on follow-up visit revealed good biventricular function

The relationship between schizotypal personality and internet addiction in university students

The current study assessed the relationship between problematic internet behaviors, as measured by the Internet Addiction Test (IAT), and schizotypal personality traits, measured by the Oxford-Liverpool Inventory of Feelings and Experiences (O-LIFE(B)). One hundred participants (aged between 20 and 30) were given a battery of psychometric assessments, including the IAT and O-LIFE(B), as well as measures of depression, and anxiety. Around 30% of the sample displayed responses to the IAT that suggested some problems controlling internet behaviors, and there was no gender difference in these figures. There were associations between both the impulsive nonconformity and introverted anhedonia schizotypal personality traits and problematic internet use, over and above those associated with depression and anxiety. This replicates some previous work that implies that impulsiveness and depression are predictive of behavioral addictions, but places them within a single construct. The findings also support the notion of two groups of users who display problematic internet behaviors - impulsive and depressed individuals

TRANSFUSION AND APHERESIS SCIENCE

Acute myeloid leukemia (AML) is malignant tumor of haemopoietic precursor cells of non-lymphoid lineage. AML can atypically present with non-spesific cutaneous lesions or wounds. There are rare acute leukemia cases which present with genital ulcerations or pyoderma gangrenosum in the literature. The effect of acute leukemia on wound healing is not known, but it is thought that cytopenias and chemotherapy can impair wound healing in patients with leukemia. The effects of chemotherapeutic agents on wound healing are arguable. Here we present wound care strategies and simultaneously applied chemotherapy in an AML patient. (C) 2011 Elsevier Ltd. All rights reserved

Parenting Styles, Parenting Stress and Hours Spent Online as Predictors of Child Internet Addiction Among Children with Autism

The current study examined the association between hours spent online (HOS), positive parenting, negative parenting, autism parental stress and Internet addiction among Singapore based boys and girls (aged 6 to 14 years old) with Autism Spectrum Disorder (ASD). The research participants included 59 parents (41 females and 18 males) aged between 28 and 74 years old (mean age 37.95). Results indicated HOS, negative parenting and autism parenting stress predicted 54.8% of the total variance in Child Internet Addiction scores of children with ASD. Autism parental stress was the most significant predictor explaining 25.3% of the total variance with time spent online explaining another 23.5% and negative parenting predicted 6%. Positive parenting was not found to be significant. The findings reinforce the importance of according greater consideration for the role of parents when working with such children.Lazarus Centre Pte Lt

Performance improvements for olive oil refining plants

WOS: 000277106400002The main objective of this study, which is conducted for the first time to the best of the authors' knowledge, is to identify improvements in olive oil refinery plants' performance. In the analyses, the actual operational data are used for performance assessment purposes. The refinery plant investigated is located in Izmir Turkey and has an oil capacity of 6250 kg h. It basically incorporates steam generators, several tanks, heat exchangers, a distillation column, flash tanks and several pumps. The values for exergy efficiency and exergy destruction of operating components are determined based on a reference (dead state) temperature of 25 C. An Engineering Equation Solver (EES) software program is utilized to do the analyses of the plant. The exergy transports between the components and the consumptions in each of the components of the whole plant are determined for the average parameters obtained from the actual data. The exergy loss and flow diagram (the so-called Grassmann diagram) are also presented for the entire plant studied to give quantitative information regarding the proportion of the exergy input that is dissipated in the various plant components. Among the observed components in the plant, the most efficient equipment is found to be the shell- and tube-type heat exchanger with an exergy efficiency value of 85%. The overall exergetic efficiency performance of the plant (the so-called functional exergy efficiency) is obtained to be about 12%, while the exergy efficiency value on the exergetic fuel product basis is calculated to be about 65%. Copyright (C) 2009 John Wiley & Sons, Ltd

Enhanced exergetic analysis of an olive oil refining plant: evaluation of the first and second level of exergy destructions

###EgeUn###Enhanced exergy analysis is built up as a novel modality to specify the origins of irreversibilities and to concentrate substantial improvement potential of components. The scope of this paper is to apply the enhanced exergy analysis to an olive oil refinery plant operated in Izmir, Turkey, that is conducted for the first time to agree the first level (endogenous/exogenous) and the second level (combination of the endogenous/exogenous and unavoidable/avoidable parts studied before) of destructions for exposing substantial efficiencies. Results showed that the components in the plant mostly have endogenous exergy destructions. Besides, the distillation unit has the highest endogenous exergy destruction value of 150.9 kW as the avoidable and unavoidable endogenous sections are 76.85 and 74.08 kW, respectively. Furthermore, the shell and tube economiser has the highest modified (enhanced) exergetic efficiency of 99.9% while the modified performances of plate-heat exchanger and pump (VII) are calculated as 73% and 71.24%, respectively.TARIS Olive Oil Company in Izmir, TurkeyThe authors would like to thank TARIS Olive Oil Company in Izmir, Turkey for supporting the research and providing actual operational data for analysis. They are also very grateful to the reviewers for their constructive and valuable suggestions

chronic periodontitis and atherosclerosis

This study was carried out to compare individuals diagnosed with atherosclerosis and periodontal periodontitis based on the degree of change in the human beta-defensins (HBD) HBD-2, HBD-3, and calprotectin. Atherosclerosis is the most frequently observed cardiovascular disease. Dental and periodontal infections are known to provide a considerable basis for atheroma plaque formation. The study group consists of a total number of 40 subjects, with 20 patients diagnosed with atherosclerosis and chronic periodontitis and 20 systemically healthy patients diagnosed with chronic periodontitis. Clinical periodontal and blood parameters and HBD-2, HBD-3, and calprotectin biomarkers in the gingival crevicular fluid were measured. In both groups, following clinical periodontal treatment, a statistically significant decrease in white blood cells (WBC), low-density lipoproteins (LDL), fibrinogen, creatinine, and platelets (PLT), a statistically significant increase in high-density lipoproteins (HDL) in blood samples, statistically meaningful decrease in HBD-2, HBD-3, and calprotectin in the gingival crevicular fluid were achieved. Blood values and HBD-2, HBD-3, calprotectin amounts in the gingival crevicular fluid were increased significantly in the test group compared to the control group. A positive correlation was observed between decreases in HBD-2, HBD-3, calprotectin, and clinical periodontal indices. Regression in systemic inflammation was observed after clinical periodontal treatment. It is concluded that nonsurgical periodontal treatment of chronic periodontitis positively affects atherosclerosis prognosis.C1 [Taspinar, Mehmet] Aksaray Univ, Fac Med, Aksaray, Turkey.[Taspinar, Mehmet] Yuzuncu Yil Univ, Fac Med, Van, Turkey.[Bozoglan, Alihan] Firat Univ, Fac Dent, Dept Periodontol, Elazig, Turkey.[Bozoglan, Alihan] Yuzuncu Yil Univ, Fac Dent, Dept Periodontol, Van, Turkey.[Ertugrul, Abdullah Seckin] Izmir Katip Celebi Univ, Fac Dent, Dept Periodontol, Izmir, Turkey.[Elmas, Levent] Pamukkale Univ, Fac Med, Denizli, Turkey

The effect of nonsurgical periodontal treatment on serum and gingival crevicular fluid markers in patients with atherosclerosis

Background and Aims: The aim of this study is to compare patients with atherosclerosis and chronic periodontitis and patients who are systemically healthy and chronic periodontitis using alteration of adrenomedullin (ADM), chemokine (C-C motif) ligand 28 (CCL-28), white blood cell levels, platelet levels, high-density lipoprotein, low-density lipoprotein, high-sensitivity C-reactive protein, creatinine, and fibrinogen.Materials and Methods: Totally, 40 patients were involved in study; a test group of 20 patients with atherosclerosis-chronic periodontitis and a control group of 20 patients who were nonatherosclerosischronic periodontitis. Nonsurgical periodontal treatment was offered to all patients, in whom systemic markers of atherosclerosis were measured in serum; ADM and CCL-28 biomarkers were measured in gingival crevicular fluid.Results: Systemic markers of atherosclerosis, ADM, and CCL-28 levels have changed significantly in the test group compared to the control group after nonsurgical periodontal treatment.Conclusions: Treatment of local inflammation and reduction of systemic inflammatory markers are believed to lower the diagnostic criteria for atherosclerosis as well. It is possible to conclude that nonsurgical periodontal treatment of chronic periodontitis, which is a risk factor for atherosclerosis, has a positive effect on the atherosclerosis prognosis.Keywords: Adrenomedullin, atherosclerosis, chemokine (C-C motif) ligand-28, chronic periodontiti