Sn/Pb ratio variation in spherical structures deposited on silicon surface using plasma focus

The deposition of Sn and Pb elements on top of Si surface was realized using plasma focus device. Due to the special characteristic of this type of plasma, the silicon substrate is heated by the bombardment of plasma ions, before the deposition of these elements sputtered from the anode. The deposition of the two elements was found to be influenced by substrate-anode distance as a consequence of surface heating. It was found that the relative amounts between the two deposited elements was not the same as their original ratio in the anode before sputtering. The ratio between Sn and Pb varies with increasing depth into the SnPb deposited on the Si substrate. Additionally, the size of micro spherical structures formed on the surface affected the ratio of the two deposited elements. The variation of the ratio is explained as result of deposition/evaporation competition influenced by the surface heating.

Differences in the Associations between Body Dissatisfaction and Eating Outcomes by Gender? A Lebanese Population Study

BACKGROUND

The objective of this study was to evaluate the impact of the interaction between body dissatisfaction and gender on eating disorders (restrained eating, binge eating, orthorexia nervosa, and emotional eating) among a sample of Lebanese adults.

METHODS

This cross-sectional study, conducted between January and May 2018, enrolled 811 participants selected randomly from all Lebanese Mohafazat. The mean age of the participants was 27.6±11.8 years. The majority were females (66.5%), had a high level of education (73.2%), and low income (77.9%). This study used the following scales: body dissatisfaction subscale of the Eating Disorder Inventory-second version, binge eating scale, Dutch restrained eating scale, orthorexia nervosa scale (ORTHO-15 scale), emotional eating scale, perceived stress scale, Hamilton Anxiety Rating Scale, and Hamilton Depression Rating Scale.

RESULTS

Body dissatisfaction was positively correlated to restrained eating (r=0.293, P<0.001), emotional eating (r=0.073, P=0.042) and binge eating (r=0.250, P<0.001). The interaction between body dissatisfaction and gender was significantly associated with more restrained eating (Beta=0.01, P<0.001) and orthorexia nervosa (Beta=-0.09, P<0.001), but not with emotional (Beta=-0.43, P=0.103) and binge eating (Beta=-0.08, P=0.358). When stratifying the analysis by gender, the results revealed that higher body dissatisfaction was significantly associated with more restrained eating in both genders, but particularly among women. Body dissatisfaction was significantly associated with higher emotional eating in men only and with higher orthorexia nervosa tendencies and behaviors in females only.

CONCLUSION

The interaction between body dissatisfaction and gender was significantly associated with orthorexia nervosa and restrained eating but not with binge or emotional eating. Higher body dissatisfaction was significantly associated with higher restrained eating, more pronounced in women, while it was significantly associated with higher orthorexia tendencies (lower ORTO-15 scores) in women only. Body dissatisfaction was associated with emotional eating in men only.

The emergency to tackle tobacco smoking by Lebanese adolescents

In Lebanon, tobacco use by adolescents remains a problem and is higher than among adults. This study sought to assess the experimentation of tobacco smoking practices among adolescents in Lebanon, and further to link health promotion at school-level (measured with the Hat Questionnaire) to the smoking behaviour at students-level (measured with the HBSC questionnaire). We relied on a cross-sectional observational study, conducted in 50 schools across Lebanon. The students' ages ranged from 11 to 18 years old (6th to 12th grade). They filled-in a confidential, anonymous self-questionnaire in class. In parallel, the school administration filled in the assessment questionnaire for health promotion. STATA Software was used for statistical analysis.7133 students were included (mean age 15.24±2.00 years). Overall, 24.5% had ever experimented cigarette smoking alone, boys more than girls (31.95% vs. 19.14%; p &lt; 0.001), mainly from Beirut (33.62%; p &lt; 0.001) and with poor health perception (29.12% vs. 19.87%; p &lt; 0.001). Overall, 33.98% had ever used water-pipe alone, again more boys (40.34% vs. 29.88%; p &lt; 0.001), from Beirut (39.55%, p &lt; 0.001), and with poor health perception (39.48% vs. 28.93%; p &lt; 0.001). Finally, 22.28% experimented both cigarettes and water-pipe. Around 70% of the involved schools offered health-related courses in their curricula. 72 % of them included interventions on the harm of smoking but not as an integral part of the curriculum. Less than half of them had developed plans to improve health promotion and review data to ensure the effectiveness of their programs. This alarming rate of use of tobacco products constitutes a major public health issue for Lebanese adolescents that needs urgent intervention. Further analysis will focus on the school-level questionnaires. Already our results will serve to foster the reinforcement of health promoting schools in Lebanon by the ministry of Education, in line with international recommendations.

Construction and validation of the Lebanese Osteoporosis Knowledge Scale among a representative sample of Lebanese women

Our study aimed at constructing and validating the Lebanese Osteoporosis Knowledge Scale adapted for use among Lebanese women and to assess factors associated with the poorest knowledge of osteoporosis definition, risk factors, and preventive measures. This scale showed adequate psychometric properties; higher knowledge scores were reached in women who already heard about the disease and had a formal education. As a result, the LOKS-19 can be used to measure knowledge of osteoporosis and help assess osteoporosis-related interventions.

INTRODUCTION

The primary objective of this study was to describe the construction of the Lebanese Osteoporosis Knowledge Scale (LOKS) and assess its psychometric properties in a representative sample of Lebanese women aged 40 years and above. Secondary objectives were to explore factors associated with this knowledge score.

METHODS

A cross-sectional study carried out between March and June 2018, enrolled 560 women over the age of 40 years living in the community. This proportionate sample was randomly selected from all Lebanese governorates to cover the entire Lebanese area. A survey was developed and adapted to the Lebanese population based on preexisting scales. Personal interviews were conducted to collect data.

RESULTS

The items of the LOKS were distributed across seven factors with an Eigenvalue over 1 solution, outlining an overall value of 55.89% of the variance. A high Cronbach's alpha was found for the full scale (0.725). Individuals having a university level of education (beta = 1.62; compared to illiteracy), having heard of osteoporosis (beta = 2.62), taking supplements of calcium and vitamin D compared to none (beta = 0.77), and having had Crohn's disease (beta = 1.71) had significantly higher knowledge scores of osteoporosis; oppositely, having diabetes (beta = - 1.17), currently taking chemotherapy (beta = - 2.25), and ever having had a fracture (beta = - 0.74) were significantly correlated with lower awareness of osteoporosis.

CONCLUSIONS

Our findings suggest that the LOKS-19 can be used to measure knowledge of osteoporosis and help assess osteoporosis-related interventions. A better knowledge seems to be associated with more preventive measures and less risk of fracture.

Osteoporosis awareness and health beliefs among Lebanese women aged 40 years and above

Our study investigated the characteristics of Lebanese women population groups with the poorest knowledge of osteoporosis definition, risk factors, and preventive measures in order to identify categories that should be targeted in future campaigns and educational programs. Higher knowledge scores were reached in women who already heard about the disease and had a formal education. As a result, osteoporosis awareness campaigns and educational programs are mostly needed in populations with lower educational levels.

INTRODUCTION

Our study investigated the characteristics of Lebanese women population groups with the poorest knowledge of osteoporosis definition, risk factors, and preventive measures.

METHODS

A cross-sectional study, conducted between March and June 2018, enrolled 560 community dwelling women aged 40 years and above. A questionnaire was used to collect data. A proportionate random sample from all Lebanese Mohafazat was used. Data collection was performed through personal interviews. The median was used as a cutoff point for both the Knowledge and Health Belief scales.

RESULTS

The study results showed that 47.3% of participants had a poor knowledge score. Women who received no education, compared to a higher education and have not previously heard about the disease, had lower knowledge scores. In addition, women not taking calcium and vitamin D supplements and not exercising or exercising less than 20 min per day compared to those having these characteristics had lower osteoporosis knowledge levels. A lower knowledge score was associated with less recognized benefits of adequate calcium intake and regular physical activity, more perceived barriers towards their practice, and a less important health motivation. A lower level of education correlated to the same results.

CONCLUSION

Lower knowledge scores were reached in women who have never heard of osteoporosis and had a lower level of education. As a result, osteoporosis awareness campaigns and educational programs need to target population categories with lower educational levels.

Quality of diabetes care in a university health center in Lebanon

OBJECTIVE

To assess the quality of care provided to diabetic patients by family physicians in a university health clinic, using measures of glycemic and cardiovascular risk control as well as documentation of and adherence to World Health Organization (WHO) guidelines for diabetes primary care.

DESIGN

Chart review of the previous year's medical notes for all identified diabetics in the practice over 2.5 years.

RESULTS

Two-hundred and four diabetic patients were identified, with an estimated prevalence of 4.1%. The majority was type II diabetics, on oral hypoglycemic agents. Glycosylated hemoglobin was documented in 39.7% of patients, fasting plasma glucose in 99%, cholesterol in 93.1%, triglycerides in 91.2% and blood pressure in 85.8%; optimal control of these indicators was noted in 28.4%, 17.8%, 34%, 29.6% and 55.4% respectively. Fifty percent of the diabetics were referred for retinal checks. Physicians documented the presence of nephropathy in 46.8% and neuropathy in 59.6%; however, they documented patient instruction on foot care, diet, exercise and diabetes self-care poorly.

CONCLUSION

There is a need for interventions to improve management and documentation in diabetes care in order to achieve early detection and prevention of complications. Developing a protocol for the clinic based on standard guidelines, and the use of flow sheets may be helpful in improving these intermediate indicators of quality of care.

Successful treatment of parathyroid cyst using ethanol sclerotherapy

Simple parathyroid cysts are rare; only about 200 cases have been reported in the literature. The diagnosis was facilitated recently by parathyroid hormone assay of the cyst fluid. Standard treatment consists of percutaneous aspiration of the cyst and surgical excision for recurrent lesions. Sclerotherapy of recurrent lesions was described in two cases and results were promising. The authors report a new case of recurrent nonfunctioning parathyroid cyst in a 34-year-old female, with complete resolution after ethanol sclerosis and no recurrence for 15 months of follow-up. Ethanol sclerotherapy is recommended as a simple and safe treatment for recurrent parathyroid cysts.