This paper presents a new approach for modeling the human body by considering the motion state and the shape of whole body. The body model consists of a skeleton kinematic model and a surface model. The former is used...This paper presents a new approach for modeling the human body by considering the motion state and the shape of whole body. The body model consists of a skeleton kinematic model and a surface model. The former is used to determine the posture of the body,and the latter is used to generate the body shape according to the given posture. The body surface is reconstructed with multi-segment B-spline surfaces based on the 3D scan data from a real human body.Using only a few joints parameters and the original surface scan data, the various body postures and the shape can be generated easily. The model has a strong potential of being used for ergonomic design,garment design, virtual reality environment, as well as creating human animation, etc.展开更多
AIM:To study whether patients with excess deoxycholic acid (DCA) differ from those with normal percentage of DCA with respect to biliary lipid composition and cholesterol saturation of gallbladder bile. METHODS:Bile w...AIM:To study whether patients with excess deoxycholic acid (DCA) differ from those with normal percentage of DCA with respect to biliary lipid composition and cholesterol saturation of gallbladder bile. METHODS:Bile was collected during operation through puncturing into the gallbladder from 122 cholesterol gallstone patients and 46 gallstone-free subjects undergoing cholecystectomy.Clinical data,biliary lipids,bile add composition, presence of crystals and nucleation time were analyzed. RESULTS:A subgroup of gallstone patients displayed a higher proportion of DCA in bile than gallstone free subjects. By choosing a cut-off level of the 90th percentile,a group of 13 gallstone patients with high DCA levels (mean 50 percent of total bile acids) and a large group of 109 patients with normal DCA levels (mean 21 percent of total bile acids) were obtained.The mean age of the patients with high DCA levels was higher than that of the group with normal levels (mean age:62 years vs45 years) and so was the mean BMI (28.3 vs.24.7).Plasma levels of cholesterol and triglycerides were slightly higher in the DCA excess groups compared with those in the normal DCA group.There was no difference in biliary lipid composition,cholesterol saturation,nucleation time or occurrence of cholesterol crystals in bile between patients with high and normal levels of DCA. CONCLUSION:Gallstone patients with excess DCA were of older age and had higher BMI than patients with normal DCA.The two groups of patients did not differ with respect to biliary lipid composition,cholesterol saturation,nucleation time or occurrence of cholesterol crystals.It is concluded that DCA in bile does not seem to contribute to gallstone formation in cholesterol gallstone patients.展开更多
AIM:To investigate the effectiveness of insulin on decreasing serum potassium concentration during anhepatic stage of orthotopic liver transplantation. METHODS:Sixteen patients with serum potassium concentrations grea...AIM:To investigate the effectiveness of insulin on decreasing serum potassium concentration during anhepatic stage of orthotopic liver transplantation. METHODS:Sixteen patients with serum potassium concentrations greater than 4.0 mmol/L at the onset of anhepatic stage were randomized into two groups.The patients in control group (n=8) received no treatment, while those in treatment group (n=8) received an intravenous bolus injection of regular insulin (20U) 10 min into the anhepatic stage,followed by a glucose infusion (500mL 50g/L dextrose) over 15 min. RESULTS:In control group,potassium concentration underwent no changes whereas in treatment group,it decreased from 4.8±0.48 mmol/L to 4.19±0.55 mmol/L (mean±SD) within 15 min and to 3.62±0.45 mmol/L 60 min after the therapy.The potassium concentration was lower in treatment group than in control group within 30 min of treatment (3.94±0.57 vs 4.47±0.42 mmol/L, respectively;P<0.05),and increased similarly 30 s after graft reperfusion in both groups of patients,but remained lower in treatment group (5.81±2.78 vs 7.44±1.75 mmol/L, respectively;P<0.05).The potassium concentration returned to pre-reperfusion levels within 5 min after graft reperfusion. CONCLUSION:In patients undergoing orthotopic liver transplantation,the administration of insulin rapidly decreases serum potassium concentration even in the absence of the liver,suggesting an important contribution by extrahepatic tissues in insulin-stimulated uptake of potassium.展开更多
A growing number of multidisciplinary studies have reported the beneficial effects of physical activities towards the development of overall well-being and the reduction of chronic illnesses. Physical inactivity is a ...A growing number of multidisciplinary studies have reported the beneficial effects of physical activities towards the development of overall well-being and the reduction of chronic illnesses. Physical inactivity is a serious worldwide problem and is considered the key lifestyle factor that negatively influences health and function of individuals. Here we propose that growth kinetics of body and mind and associated disproportionate physical activity may have considerable effects on the increased physical and mental illnesses and premature death rates currently observed in mid to late adulthood people. Children and young adults, being in exponential growth phase and self-motivated to engage in physical activity, possess more cognition, resilience, and mind-body-emotion-spirit integration. In contrast, as our body transitions into adulthood, there is a decline in the growth of body and mind. Furthermore, in this period, adults experience the increased stressors of career and financial demands, time pressure, and family responsibilities. The decline in growth combined with prolonged stress appears to result in reduced cognition, resilience, and mind-body-emotion-spirit integration, leading to sedentary and other faulty lifestyles, which could further lead to a predisposition to maladaptive behaviours and various chronic diseases at a later stage. In agreement with this, currently more than two thirds of the adult population across the world are physically inactive and are failing to perform the daily recommended guidelines of moderate to vigorous exercise. As negative changes and faulty lifestyles begin to occur during and after adulthood transition, creating awareness in people between 29 to 35 years of age about mindful exercise should be considered a national priority. This would allow adults to achieve overall well-being, and increased productivity and life expectancy, reducing health care-associated economic burden placed on the nation.展开更多
基金This work was funded by the Science & Technology Development Fund of Shanghai, China( No. 005111081)
文摘This paper presents a new approach for modeling the human body by considering the motion state and the shape of whole body. The body model consists of a skeleton kinematic model and a surface model. The former is used to determine the posture of the body,and the latter is used to generate the body shape according to the given posture. The body surface is reconstructed with multi-segment B-spline surfaces based on the 3D scan data from a real human body.Using only a few joints parameters and the original surface scan data, the various body postures and the shape can be generated easily. The model has a strong potential of being used for ergonomic design,garment design, virtual reality environment, as well as creating human animation, etc.
文摘AIM:To study whether patients with excess deoxycholic acid (DCA) differ from those with normal percentage of DCA with respect to biliary lipid composition and cholesterol saturation of gallbladder bile. METHODS:Bile was collected during operation through puncturing into the gallbladder from 122 cholesterol gallstone patients and 46 gallstone-free subjects undergoing cholecystectomy.Clinical data,biliary lipids,bile add composition, presence of crystals and nucleation time were analyzed. RESULTS:A subgroup of gallstone patients displayed a higher proportion of DCA in bile than gallstone free subjects. By choosing a cut-off level of the 90th percentile,a group of 13 gallstone patients with high DCA levels (mean 50 percent of total bile acids) and a large group of 109 patients with normal DCA levels (mean 21 percent of total bile acids) were obtained.The mean age of the patients with high DCA levels was higher than that of the group with normal levels (mean age:62 years vs45 years) and so was the mean BMI (28.3 vs.24.7).Plasma levels of cholesterol and triglycerides were slightly higher in the DCA excess groups compared with those in the normal DCA group.There was no difference in biliary lipid composition,cholesterol saturation,nucleation time or occurrence of cholesterol crystals in bile between patients with high and normal levels of DCA. CONCLUSION:Gallstone patients with excess DCA were of older age and had higher BMI than patients with normal DCA.The two groups of patients did not differ with respect to biliary lipid composition,cholesterol saturation,nucleation time or occurrence of cholesterol crystals.It is concluded that DCA in bile does not seem to contribute to gallstone formation in cholesterol gallstone patients.
基金Supported by the National Natural Science Foundation of China,No.39900140
文摘AIM:To investigate the effectiveness of insulin on decreasing serum potassium concentration during anhepatic stage of orthotopic liver transplantation. METHODS:Sixteen patients with serum potassium concentrations greater than 4.0 mmol/L at the onset of anhepatic stage were randomized into two groups.The patients in control group (n=8) received no treatment, while those in treatment group (n=8) received an intravenous bolus injection of regular insulin (20U) 10 min into the anhepatic stage,followed by a glucose infusion (500mL 50g/L dextrose) over 15 min. RESULTS:In control group,potassium concentration underwent no changes whereas in treatment group,it decreased from 4.8±0.48 mmol/L to 4.19±0.55 mmol/L (mean±SD) within 15 min and to 3.62±0.45 mmol/L 60 min after the therapy.The potassium concentration was lower in treatment group than in control group within 30 min of treatment (3.94±0.57 vs 4.47±0.42 mmol/L, respectively;P<0.05),and increased similarly 30 s after graft reperfusion in both groups of patients,but remained lower in treatment group (5.81±2.78 vs 7.44±1.75 mmol/L, respectively;P<0.05).The potassium concentration returned to pre-reperfusion levels within 5 min after graft reperfusion. CONCLUSION:In patients undergoing orthotopic liver transplantation,the administration of insulin rapidly decreases serum potassium concentration even in the absence of the liver,suggesting an important contribution by extrahepatic tissues in insulin-stimulated uptake of potassium.
文摘A growing number of multidisciplinary studies have reported the beneficial effects of physical activities towards the development of overall well-being and the reduction of chronic illnesses. Physical inactivity is a serious worldwide problem and is considered the key lifestyle factor that negatively influences health and function of individuals. Here we propose that growth kinetics of body and mind and associated disproportionate physical activity may have considerable effects on the increased physical and mental illnesses and premature death rates currently observed in mid to late adulthood people. Children and young adults, being in exponential growth phase and self-motivated to engage in physical activity, possess more cognition, resilience, and mind-body-emotion-spirit integration. In contrast, as our body transitions into adulthood, there is a decline in the growth of body and mind. Furthermore, in this period, adults experience the increased stressors of career and financial demands, time pressure, and family responsibilities. The decline in growth combined with prolonged stress appears to result in reduced cognition, resilience, and mind-body-emotion-spirit integration, leading to sedentary and other faulty lifestyles, which could further lead to a predisposition to maladaptive behaviours and various chronic diseases at a later stage. In agreement with this, currently more than two thirds of the adult population across the world are physically inactive and are failing to perform the daily recommended guidelines of moderate to vigorous exercise. As negative changes and faulty lifestyles begin to occur during and after adulthood transition, creating awareness in people between 29 to 35 years of age about mindful exercise should be considered a national priority. This would allow adults to achieve overall well-being, and increased productivity and life expectancy, reducing health care-associated economic burden placed on the nation.
