Jamdani weaving is one of the oldest heredities of Bangladesh. From the beginning 100% cotton yarn was used to produce high quality jamdani saree. The weavers were the finest with weaving skills. Higher yarn count yar...Jamdani weaving is one of the oldest heredities of Bangladesh. From the beginning 100% cotton yarn was used to produce high quality jamdani saree. The weavers were the finest with weaving skills. Higher yarn count yarns were used to weave the jamdani saree. In course of time at present manmade fibres are also used to produce jamdani saree. The use of filament yarn may have eased the manufacturing difficulties, but the jamdani saree is missing its originality without 100% cotton. In this project, random jamdani saree sample was collected to identify the fibre composition. Samples of filament were also collected from the manufacturer and tested. It was evident that instead of cotton yarn in warp and weft silk and polyester filament yarn were used.展开更多
目的探讨回族原发性青光眼患者眼部血流动力学改变特点。方法采用美国MULTIGON500M型TCD仪器检测29例青光眼组及31例正常对照组眼动脉（oph-thal mic artery,OA）、视网膜中央动脉（central artery of reti-na,CRA）和睫状后动脉（poste...目的探讨回族原发性青光眼患者眼部血流动力学改变特点。方法采用美国MULTIGON500M型TCD仪器检测29例青光眼组及31例正常对照组眼动脉（oph-thal mic artery,OA）、视网膜中央动脉（central artery of reti-na,CRA）和睫状后动脉（posterior ciliary artery,PCA）。检测指标为：收缩期峰值流速、舒张期末流速、平均流速、搏动指数（pulsatility index,PI）、阻力指数（resistent index,RI）、频谱形态和监听频声。结果青光眼患者的CRA及SPCA的收缩期峰值流速分别为（7.55±2.43）cm·s^-1、（9.37±1.14）cm·s^-1,舒张期血流速度（2.10±0.93）cm·s^-1、（2.89±0.79）cm·s^-1及平均流速（4.54±1.44）cm·s^-1、（5.87±1.23）cm·s^-1均低于正常对照组,RI（0.65±0.70～0.76±0.60）明显高于正常对照组,PI显著高于正常对照组。结论青光眼患者眼血管血流动力学有明显改变,说明血管性因素可能在青光眼视神经的损伤中发挥了重要作用。展开更多
文摘Jamdani weaving is one of the oldest heredities of Bangladesh. From the beginning 100% cotton yarn was used to produce high quality jamdani saree. The weavers were the finest with weaving skills. Higher yarn count yarns were used to weave the jamdani saree. In course of time at present manmade fibres are also used to produce jamdani saree. The use of filament yarn may have eased the manufacturing difficulties, but the jamdani saree is missing its originality without 100% cotton. In this project, random jamdani saree sample was collected to identify the fibre composition. Samples of filament were also collected from the manufacturer and tested. It was evident that instead of cotton yarn in warp and weft silk and polyester filament yarn were used.
文摘目的探讨回族原发性青光眼患者眼部血流动力学改变特点。方法采用美国MULTIGON500M型TCD仪器检测29例青光眼组及31例正常对照组眼动脉（oph-thal mic artery,OA）、视网膜中央动脉（central artery of reti-na,CRA）和睫状后动脉（posterior ciliary artery,PCA）。检测指标为：收缩期峰值流速、舒张期末流速、平均流速、搏动指数（pulsatility index,PI）、阻力指数（resistent index,RI）、频谱形态和监听频声。结果青光眼患者的CRA及SPCA的收缩期峰值流速分别为（7.55±2.43）cm·s^-1、（9.37±1.14）cm·s^-1,舒张期血流速度（2.10±0.93）cm·s^-1、（2.89±0.79）cm·s^-1及平均流速（4.54±1.44）cm·s^-1、（5.87±1.23）cm·s^-1均低于正常对照组,RI（0.65±0.70～0.76±0.60）明显高于正常对照组,PI显著高于正常对照组。结论青光眼患者眼血管血流动力学有明显改变,说明血管性因素可能在青光眼视神经的损伤中发挥了重要作用。
