Preparation of TiO2 Coatings on Carbon Fibers

Carbon fibers have been TiO2 coated. Previously, the carbon fiber surface has been heat-treated to remove the sizing. The TiO2 layer has been formed on the fiber surface using the sol-gel technique by immersion in a solution. After coating, the samples have been dried at room temperature and annealed at 500 °C in air for 30 minutes. The phase composition of the coating obtained has been studied using X-ray diffraction. X-ray diffraction analysis of the coating and sol has shown that the rutile phase and the average size of TiO2 crystallites grow with an increase in the annealing temperature. The results of studying TiO2 coating antioxidative properties within 500-800 °C are given. Studying the morphology of the TiO2 coating on the fiber surface and the burnout rate (weight change) have shown that the coating exhibits good oxidation resistance up to 600 °C.

Efektivitas Pelatihan ‘ASIMERU’ Sebagai Upaya Menurunkan Tingkat Burnout Guru SMPN Y Surabaya

Burnout adalah stres berkepanjangan yang muncul karena beban pekerjaan yang berlebih. Salah satu profesi di bidang pendidikan yang mengalami burnout adalah guru di SMPN Y Surabaya. Salah satu upaya menurunkan tingkat burnout yakni melalui Pelatihan ‘ASIMERU’. Pelatihan ini berbasis penerapan Modal Psikologis yakni mengimplementasikan HERO (Hope, Self-efficacy, Resiliency & Optimism). Penelitian ini menggunakan pendekatan kuantitatif dengan metode eksperimen pretest-posttest design. Penelitian ini menggunakan teknik purposive sampling dengan jumlah 10 paritisipan. Tingkat burnout diukur dengan skala burnout oleh Maslach, Jackson, Leiter (1996) yang diberikan sebelum dan sesudah pelatihan yang kemudian dianalisis menggunakan paired sample t-test. Hasil penelitian menunjukkan bahwa Pelatihan ‘ASIMERU’ efektif untuk menurunkan tingkat burnout para guru di SMPN Y Surabaya. Burnout is a prolonged stress arising due to an excessive workload. Teachers at Public Junior High School Y Surabaya has experienced burnout. ‘ASIMERU’ training, which is based on Psychological Capital (Hope, Self-efficacy, Resiliency & Optimism) was designed to reduce burnout rate. This study used a quantitative approach with an experimental method with a pretest-posttest design type. This study utilized a purposive sampling technique which then obtained 10 participants. The study used the burnout scale by Maslach, Jackson, Leiter (1996) given before and after training which then analyzed by using paired sample t-test. The results showed that the "ASIMERU" training was effective in reducing the burnout rate of the teachers at Public Junior High School Y Surabaya.

Laboratory plant for evaluation of burnout rate of various materials

Описана методика исследования скорости выгорания различных материалов. Для реализации методики создана лабораторная установка. Экспериментально установлено, что процесс выгорания материалов зависит от температуры реактора и скорости воздушного потока. Кривая выгорания имеет S-образный вид и три характерных участка: индукционный период, линейный участок и участок реакции, где происходит выгорание углеродистого остатка. В табличной форме представлены результаты исследования некоторых широко распространенных материалов. The article describes a method for studying the burnout rate of various materials. There was created the laboratory plant for implementation of the method. It is experimentally established that the process of burnout of materials depends on the temperature of the reactor and the air flow rate. The burn-up curve has an S-shape and three characteristic sections: the induction period, the linear section, and the reaction section where the carbon residue burns out. The article presents the results of study of some widely distributed materials in tabular form. The mass burn rate of beech wood is 1.5 times higher than that one of pine. Perhaps this is due to the impregnation of beech with furniture varnish, since the sample was part of the furniture lining. It is noteworthy that significant discrepancy in the burn-up rates was obtained during combustion of samples of different brands of polyurethane foams. So, for hard polyurethane foam - “izolan 2”, which has a flame retardant in its composition, burnout curves with longer induction period are obtained (as a result of flame retardant action). However, the burnout rate is higher in comparison with soft polyurethane foam without flame retardant (foam rubber). The composition of the material “isolan-2”. Rubber also has a long induction period, but a high burnout rate.

Role of peer support in competitive classroom climates: Focusing on the mediation effect of academic hatred in the JD-R model

This study aimed to verify the different effects of peer support on academic hatred depending on the levels of teachers’ academic pressure. Additionally, we examined the effects of academic hatred on academic burnout and engagement by applying the job demand-resources (JD-R) model. Data were collected from 43 classes at 8 high schools (N = 1015, 94.2% response rate, 57.3% women) in South Korea. The results of a multigroup analysis were as follows: (1) peer support served as an important resource in classrooms experiencing high teachers’ academic pressures; (2) peer support directly affected academic burnout and engagement, and reduced academic hatred; and (3) reduced academic hatred served as a mediator for lower burnout rate and increased engagement.

Burnout among Adolescent Population during Covid-19 Lockdown in Sialkot Pakistan

Background: To analyze the change in behavioral patterns, its impact, and peer pressure caused by COVID-19 lockdown among the adolescent population. Methods: It was an observational study with sample size of 443 participants. The study was conducted after ethical approval. Data were collected from different academic institutions in Sialkot, Pakistan using Burnout rating scale. The target population was adolescents of age 13-19 years. Regression analysis was done to find predictor factors mobile use and lockdown on the dependent variable Burnout score. The correlation was applied among mobile phone use, lockdown, and burnout score. IBM software SPSS version 21 was used to analyze data. Results: Among 443 participants, 305 were female and 138 were male making 68.8% and 31.2% respectively. 57.1% of participants were doing well, 24.8% became candidates for burnout. In 13.3% of candidates, the burnout made changes, and for only 4.7% action should be taken for their health. The correlation coefficient among burnout and using mobile was 0.194 that is highly significant showing a direct positive association between these two variables. The correlation coefficient (R) has a value of -0.222 between burnout and lockdown also showing significance. Conclusion: Behavioral changes in adolescents concerning burnout due to COVID-19 lockdown was more exaggerated than the actual burnout rate. Behavioral outcome due to COVID-19 lockdown was not that much destructive for adolescent mental health, but only if combined with the other negative traits of the individual. The protocol of the study was registered on ClinicalTrials.gov wide Identifier: NCT04697030

1 An evaluation of burnout amongst defence medical services anaesthesia trainees

IntroductionMultiple studies have found burnout to be the highest amongst Anaesthetists and Intensivists. A recent report by the Royal College of Anaesthetists (RCoA) in 2017 reported a burnout rate of 85% amongst anaesthetic trainees. This project aimed to evaluate following questions:What are the levels of burnout among defence anaesthetic trainees?What are the main causes of burnout among defence anaesthetic trainees?MethodsWe conducted an on-line anonymous survey across all trainees within the military anaesthesia cadre which consisted of the following sections:DemographicsOldenburg Burnout InventoryBaseline Mental Health (PHQ 9 & GAD 7)Stressors (Severity and Frequency)ResultsWhilst the burnout rate appears relatively high at 57.9%, it was comparatively lower against the RCoA report. Army (53%) and RAF (46%) trainees had similar rates of burnout whilst the Navy (76.9%) had notably a higher rate. Gender and seniority did not seem to have an effect on burnout. The findings of this study are more in line with other baseline burnout studies than the RCoA welfare report.ConclusionsThe effect of work on personal/family life and administrative burdens seem to be consistent regardless of burnout status. The perceived degree of workload and staff/resource availability appears to be discriminatory to those labelled low risk potentially mirroring the differences seen between services and highlights potential areas to modify our risk of burnout within our cadre.

The impact of COVID-19 on oncologists: Experience from Egyptian physicians.

e13514 Background: The unprecedented emergence of coronavirus disease (COVID-19) has disrupted the patients' and physicians' daily activities, including cancer care. However, little is known on how COVID-19 has impacted oncologists from low and middle-income countries. Methods: We conducted a cross-sectional survey among eighty-eight practicing oncologists in Alexandria governorate, Egypt. An electronic, anonymized self-reporting survey was distributed in February 2020 to collect information on occupational safety measures, the prevalence of COVID-19 among respondents, workload, and family support during the pandemic Results: Out of 88 contacted oncologists, 75% completed the survey (n=66). Nearly half (45%) of respondents were residents, 36% were specialists, and 18% were consultants. The mean age of respondents was 34.79 years (SD ±10.42). More than half of the respondents were not comfortable managing cancer patients during the pandemic (56%) and did not feel well-protected at the workplace (58%). However, most (79%) had managed a cancer patient with COVID-19 more than once. Furthermore, almost all participants (98%) have worked with an infected colleague. Nevertheless, to more than half (54%), it made no difference working with a colleague who was previously infected. Most physicians (79%) felt overwhelmed with workload than the pre-pandemic period. Despite being COVID-19 negative, nearly half reported their family members had reduced contact with them due to the fear of being infected. In contrast, 24% are now getting more family support, whereas 27% are experiencing the same contact level as before the COVID-19 era. Physicians lacking family support had a significantly higher burnout rate than those who had family support (p=0.038). However, the burnout rate was similar regardless of doctors' rank, or treating COVID-19 patients, or feeling protected at work. The majority of the participants (75%) had experienced COVID-19 like symptoms, and one third (n=21) were confirmed COVID-19 infected: residents - 52%, specialists - 33%, and consultants - 14%. Nevertheless, we found no association between the rank and being infected with COVID-19 (p=0.632). Most participants thought they were infected at the hospital (38% by patients; 24% by colleagues), and 14% by family members. However, there was no significant association between being infected and feeling protected at work (p=0.823). Most of the infected physicians (61%) received moral support from both the family and colleagues, and 33% received family support only. There was no association between burnout rate and being COVID-19 infected (p=0.719). Conclusions: One-third of the oncologists were COVID-19 positive. Besides, most oncologists feel overwhelmed with workload and experience more burnout than before the COVID-19 era, and it worsens if one lacks family support.

Laboratory method of determining the rate of burnout of liquid fuel

Introduction. In accordance with the provisions GOST 12.1.044-89 (ISO 4589-84) (Fire and Explosion hazard substances and materials. Nomenclature of indicators and metods of their determination) one of the important parameters of liquid combustion are the mass rate of liquid burnout and the influence of various conditions of the combustion process on the mass burnup rate. A laboratory method for determining the mass burnout rate of a combustible liquid has been developed. Goals and objectives. The aim of the study is to develop a laboratory method for determining the mass rate of liquid burn-up, which can be used in the educational process during laboratory work and to simulate the effect of combustion conditions on the mass rate of liquid burn-up. Methods. To implement this task, we used video recording of changes in the mass of the liquid during its combustion in vessels of different diameters, followed by graphical processing of the results of experiments for calculate the burn-up rate under different combustion conditions. Results and discussion. The method was tested on the example of the combustion of acetone. An example of computer-graphical result for calculating the mass rate of acetone burn-up is given. The empirical dependents of the acetone burn-up rate on the diameter of the liquid surface area is obtained. Conclusions. A laboratory method for determining the mass rate of burnout of a flammable liquid, which can be used in the educational process during laboratory work, has been developed. In contrast to GOST 12.1.044-89 (ISO 4589-84), the developed method can use vessels with a liquid diameter of more than 60 mm. Keywords: burnout rate, acetone, laboratory technique