The Role of Adolescents in Bullying at School

Bullying is a phenomenon that can occur at various ages and in various environments, including at school. The purpose of this study was to determine the role of adolescents in bullying at schools. This study is a descriptive analytic study. The instrument used to collect data about bullying was was a modified Olweus Bully/Victim questionnaire. Data were obtained using a google form which was distributed to all junior high school adolescents for 2 weeks. The number of incoming respondent data was 197 respondents who then went through screening in completing the questionnaire, finally resulting in a total of 167 junior high school adolescents. The data obtained were analyzed descriptively and presented in the form of frequency and percentage. The number of adolescents who became victims of bullying was mostly in the form of verbal violence and received slander, each with a frequency of 1-2 times in 59 adolescents (35.33%). Verbal violence had a frequency of 1-2 times in 33 teenagers (19.76%), and slander had a frequency of 1-2 times in 25 adolescents (14.97%). The role of adolescents in bullying incidents at school is that they have been victims, perpetrators and both victims and perpetrators. Appropriate education is needed for adolescents so that adolescents who are victims are able to survive and perpetrators are able to control themselves so they can stop bullying. Keywords: adolescents, bullying, incident

Psychometric properties of End-of-Life Caregiving Experience Appraisal Scale: Iranian critical care nurses

This is the author accepted manuscript. The final version is available from Wiley via the DOI in this record.Background: Health care providers should be able to provide good quality end-of-life care. A tool to evaluate the positive and negative consequences of caring for dying patients is warranted. Aim: The aim of this study was to evaluate the psychometric properties of the Persian version of the End-of-Life Caregiving Experience Appraisal Scale (EOLCAS). Methods: This research was conducted in two phases. Phase I: The World Health Organization Protocol of forward-backward translation and an expert panel in order to determine face and content validity. Phase II: Survey development with 310 nurses who worked in critical care units, construct validity (construct, convergent and divergent validity), internal consistency (average inter-item correlation, Cronbach's alpha and McDonald's omega) and construct reliability were evaluated. Results: The exploratory factor analysis showed that the present scale (Persian version) has four factors: Negative physical-emotional and social consequences, transcendental communication, information deficits and future rumination, which explained 83·92% of the overall extracted variance. Convergent and divergent validity were confirmed for all factors. The internal consistency and construct reliability were acceptable. Conclusion: The scale has a multidimensional concept that is sufficiently reliable and the use of the scale would be helpful in measuring consequences of caring for dying patients. Relevance to clinical practice: This scale makes a significant contribution in that it helps in the recognition of positive and negative consequences of critical care nurses' caring for dying patients

Psychometric Evaluation of a Persian Version of the Cardiac Depression Scale in Iranian Patients with Acute Myocardial Infarction

This is the author accepted manuscript. The final version is available from Springer Publishing Company via the DOI in this recordPurpose: The aim of this study was to validate a Persian version of the Cardiac Depression Scale (CDS) in Iranian patients with Acute Myocardial Infarction (AMI). This was a methodological study. Methods: A demographic survey and the CDS were used for data collection. The CDS was forward translated from English into Persian and back translated to English. Validity was assessed using face, content and construct validity. Results: The construct validity of the scale showed two factors with eigenvalues greater than one. The Cronbach’s alpha, Theta, McDonald, and construct reliability were greater than .70. Convergent and discriminant validity of the constructs were fulfilled. Conclusions: Given the importance of mental health in risk prevention in AMI patients, the Persian CDS is a useful screening tool for detection of depression in this patient cohort

A singular edge-based smoothed finite element method (ES-FEM) for bimaterial interface cracks

10.1007/s00466-009-0422-3Computational Mechanics452-3109-125CMME

Relation of intelligence quotient and body mass index in preschool children: a community-based cross-sectional study

OBJECTIVE: Overweight and obesity in children is a global problem. Besides physical effects, obesity has harmful psychological effects on children. METHODS: We carried out cross-sectional community-based study to investigate the relation between body mass index (BMI) and cognitive functioning in preschool children. Thirteen socioeconomical elements of 1151 children were measured and analyzed based on their intelligence quotient (IQ) test results. Thirteen out of 33 provinces were selected randomly, and schools were selected as clusters in rural and urban areas. Descriptive statistics, t-test, analysis of variance and regression were used when appropriate. RESULTS: Our analysis showed that IQ was associated with household income, place of residence, delivery type, type of infant feeding and father's and mother's education level (P<0.001 for all). Using penalized linear regression for eliminating the impact of confounding factor, our study shows that, living in metropolitan (β=2.411) and urban areas (β=2.761), the level of participants' father's education (β=5.251) was positively and BMI (β=−0.594) was negatively related with IQ test results. CONCLUSIONS: The findings of the present study showed that a lower IQ score is associated with higher BMI. However, this relation appears to be largely mediated when the socioeconomic status was considered

Functionalized Graphene Oxide with Chitosan for Protein Nanocarriers to Protect against Enzymatic Cleavage and Retain Collagenase Activity

Proteins have short half-life because of enzymatic cleavage. Here, a new protein nanocarrier made of graphene oxide (GO) + Chitosan (CS) is proposed to successfully prevent proteolysis in protein and simultaneously retain its activity. Bovine serum albumin (BSA) and collagenase were loaded on GO and GO-CS to explore the stability and activity of proteins. SEM, AFM, TEM, DSC, UV-Vis, FT-IR, RBS, Raman, SDS-PAGE and zymography were utilized as characterization techniques. The protecting role of GO and GO-CS against enzymatic cleavage was probed by protease digestion analysis on BSA, where the protease solution was introduced to GO-BSA and GO-CS-BSA at 37 °C for 0.5-1-3-6 hours. Characterizations showed the successful synthesis of few layers of GO and the coverage by CS. According to gelatin zymographic analysis, the loaded collagenase on GO and GO-CS lysed the gelatin and created non-staining bands which confirmed the activity of loaded collagenase. SDS-PAGE analysis revealed no significant change in the intact protein in the GO-BSA and GO-CS-BSA solution after 30-minute and 1-hour exposure to protease; however, free BSA was completely digested after 1 hour. After 6 hours, intact proteins were detected in GO-BSA and GO-CS-BSA solutions, while no intact protein was detected in the free BSA solution