The Effect of Fabric Structure and Strain Percentage on the Tensile Stress Relaxation of Rib Weft Knitted Fabrics

Sheyda Sadat Mirjalali Bandari,Azita Asayesh,Masoud Latifi 한국섬유공학회 2020 Fibers and polymers Vol.21 No.4

Stress relaxation is a time-dependent behavior in textiles, which occurs with the release of stresses when the textileis under constant strain over a period of time. This phenomenon will induce disturbances in textile performance inapplications such as pressure garments, varicose stockings, pressure bandages and etc., in which it is critical to maintainpressure on the scar area, within a certain range according to instructions from doctors or therapists. Consequently, bytheoretical and experimental research on the factors affecting stress relaxation, it will be possible to design and produceappropriate functional clothes. In the present study, double jersey weft knitted fabrics with five different knit patternsdiffering in the number of back bed tuck stitches have been produced and the effect of fabric structure and strain value on thestress relaxation of the fabrics in the course direction have been investigated. The results reveal that by increasing the numberof tuck stitches in the fabric structure, the initial and residual stress values decrease whilst the stress relaxation of the fabricincreases. Moreover, in all fabric structures, applying higher tensile strain will cause higher stress in the fabrics as well asincrease the stress relaxation of the fabrics. Eventually, three components Maxwell model with parallel connected nonlinearspring proposed as the best model that matches the experimental results. As a whole, to enhance the functionality of pressuregarments, varicose stockings and compression bandages, the use of tuck stitch in the fabric structure is not recommended.

Balcony genioplasty: a novel technique for better esthetic results in patients with deep mentolabial fold

Keyhan, Seied Omid,Cheshmi, Behzad,Fallahi, Hamid Reza,Asayesh, Mohammad Ali,Fattahi, Tirbod Korean Association of Maxillofacial Plastic and Re 2019 Maxillofacial Plastic Reconstructive Surgery Vol.41 No.-

Background: To introduce a novel technique for advancement genioplasty helping surgeons to avoid soft tissue difficulties especially in short-faced patients with deep mentolabial fold and everted lower lip. Case presentation: In a trapezius-shaped, osteotomy was performed in the chin region. The mobilized segment was advanced, and the existing gap was grafted using interpositional allograft materials. Each side had been fixated by three-hole plates and two screws. The outcomes revealed no change in lower anterior teeth vitality. The patients did not report any changes of sensation in lower lip and chin either. The measurements indicated no increase in depth of mentolabial fold in patients undergoing this surgical technique. The postoperative evaluation showed a successful esthetic outcome for the patient and the surgeon concurrently. Conclusion: Based on our experience, the authors concluded that the Balcony technique is a simple and reliable procedure for patients with a deep mentolabial fold.

Is the association of continuous metabolic syndrome risk score with body mass index independent of physical activity? The CASPIAN-III study

Ramin Heshmat,Gita shafiee,Roya Kelishadi,Amir Eslami Shahr Babaki,Mohammad Esmaeil Motlagh,Tahereh Arefirad,Gelayol Ardalan,Asal Ataie-Jafari,Hamid Asayesh,Rasool Mohammadi,Mostafa Qorbani 대한지역사회영양학회 2015 Nutrition Research and Practice Vol.5 No.6

BACKGROUND/OBJECTIVES: Although the association of body mass index (BMI) with metabolic syndrome (MetS) is well documented, there is little knowledge on the independent and joint associations of BMI and physical activity with MetS risk based on a continuous scoring system. This study was designed to explore the effect of physical activity on interactions between excess body weight and continuous metabolic syndrome (cMetS) in a nationwide survey of Iranian children and adolescents. SUBJECTS/METHODS: Data on 5,625 school students between 10 and 18 years of age were analyzed. BMI percentiles, screen time activity (STA), leisure time physical activity (LTPA) levels, and components of cMetS risk score were extracted. Standardized residuals (z-scores) were calculated for MetS components. Linear regression models were used to study the interactions between different combinations of cMetS, LTPA, and BMI percentiles. RESULTS: Overall, 984 (17.5%) subjects were underweight, whereas 501 (8.9%) and 451 (8%) participants were overweight and obese, respectively. All standardized values for cMetS components, except fasting blood glucose level, were directly correlated with BMI percentiles in all models (P-trend < 0.001); these associations were independent of STA and LTPA levels. Linear associations were also observed among LTPA and standardized residuals for blood pressure, high-density lipoprotein, and waist circumference (P-trend < 0.01). CONCLUSIONS: Our findings suggest that BMI percentiles are associated with cMetS risk score independent of LTPA and STA levels.

Is the association of continuous metabolic syndrome risk score with body mass index independent of physical activity? The CASPIAN-III study

Ramin Heshmat,Gita shafiee,Roya Kelishadi,Amir Eslami Shahr Babaki,Mohammad Esmaeil Motlagh,Tahereh Arefirad,Gelayol Ardalan,Asal Ataie-Jafari,Hamid Asayesh,Rasool Mohammadi,Mostafa Qorbani 한국영양학회 2015 Nutrition Research and Practice Vol.9 No.4

BACKGROUND/OBJECTIVES: Although the association of body mass index (BMI) with metabolic syndrome (MetS) is well documented, there is little knowledge on the independent and joint associations of BMI and physical activity with MetS risk based on a continuous scoring system. This study was designed to explore the effect of physical activity on interactions between excess body weight and continuous metabolic syndrome (cMetS) in a nationwide survey of Iranian children and adolescents. SUBJECTS/METHODS: Data on 5,625 school students between 10 and 18 years of age were analyzed. BMI percentiles, screen time activity (STA), leisure time physical activity (LTPA) levels, and components of cMetS risk score were extracted. Standardized residuals (z-scores) were calculated for MetS components. Linear regression models were used to study the interactions between different combinations of cMetS, LTPA, and BMI percentiles. RESULTS: Overall, 984 (17.5%) subjects were underweight, whereas 501 (8.9%) and 451 (8%) participants were overweight and obese, respectively. All standardized values for cMetS components, except fasting blood glucose level, were directly correlated with BMI percentiles in all models (P-trend < 0.001); these associations were independent of STA and LTPA levels. Linear associations were also observed among LTPA and standardized residuals for blood pressure, high-density lipoprotein, and waist circumference (P-trend < 0.01). CONCLUSIONS: Our findings suggest that BMI percentiles are associated with cMetS risk score independent of LTPA and STA levels.

Is the association of continuous metabolic syndrome risk score with body mass index independent of physical activity? The CASPIAN-III study

Heshmat, Ramin,shafiee, Gita,Kelishadi, Roya,Babaki, Amir Eslami Shahr,Motlagh, Mohammad Esmaeil,Arefirad, Tahereh,Ardalan, Gelayol,Ataie-Jafari, Asal,Asayesh, Hamid,Mohammadi, Rasool,Qorbani, Mostafa The Korean Nutrition Society 2015 Nutrition Research and Practice Vol.9 No.4

BACKGROUND/OBJECTIVES: Although the association of body mass index (BMI) with metabolic syndrome (MetS) is well documented, there is little knowledge on the independent and joint associations of BMI and physical activity with MetS risk based on a continuous scoring system. This study was designed to explore the effect of physical activity on interactions between excess body weight and continuous metabolic syndrome (cMetS) in a nationwide survey of Iranian children and adolescents. SUBJECTS/METHODS: Data on 5,625 school students between 10 and 18 years of age were analyzed. BMI percentiles, screen time activity (STA), leisure time physical activity (LTPA) levels, and components of cMetS risk score were extracted. Standardized residuals (z-scores) were calculated for MetS components. Linear regression models were used to study the interactions between different combinations of cMetS, LTPA, and BMI percentiles. RESULTS: Overall, 984 (17.5%) subjects were underweight, whereas 501 (8.9%) and 451 (8%) participants were overweight and obese, respectively. All standardized values for cMetS components, except fasting blood glucose level, were directly correlated with BMI percentiles in all models (P-trend < 0.001); these associations were independent of STA and LTPA levels. Linear associations were also observed among LTPA and standardized residuals for blood pressure, high-density lipoprotein, and waist circumference (P-trend < 0.01). CONCLUSIONS: Our findings suggest that BMI percentiles are associated with cMetS risk score independent of LTPA and STA levels.