The horizontal block stripe,as an image quality defect,was analyzed by means of output signals and bias voltage stress(BVS)test.The results showed that the defect was correlated with discharging efficiency.Further,two...The horizontal block stripe,as an image quality defect,was analyzed by means of output signals and bias voltage stress(BVS)test.The results showed that the defect was correlated with discharging efficiency.Further,two approaches were proposed,one was to improve TFT characteristic,the other was to add reset function.The combined experiments indicated that discharging promotion can improve the defect.Especially the latter is most optimal to eliminate the phenomenon.展开更多
为了解产热对动物免疫能力的影响,通过肩胛间褐色脂肪组织(interscapular brown adipose tissue,IBAT)切除术和低温处理,将雌性黑线仓鼠(Cricetulus barabensis)随机分为常温假切组(warm BAT sham‑removed group,WS,n=5)、低温假切组(co...为了解产热对动物免疫能力的影响,通过肩胛间褐色脂肪组织(interscapular brown adipose tissue,IBAT)切除术和低温处理,将雌性黑线仓鼠(Cricetulus barabensis)随机分为常温假切组(warm BAT sham‑removed group,WS,n=5)、低温假切组(cold BAT sham‑removed group,CS,n=7)和低温切除组(cold BAT removed group,CR,n=8),比较了产热和免疫器官大小及血液指标和免疫功能的差异。结果发现,切除IBAT或逐渐降温均不影响雌性黑线仓鼠的体质量和身体成分,但低温导致总脂肪质量下降。切除IBAT不影响肝脏、脾脏和胸腺等器官的鲜质量,提示器官水平产热和免疫之间无权衡关系,但逐渐降温增加了小肠鲜质量及长度、结肠鲜质量、总消化道长,暗示为满足低温下的高能量需求,其加工食物的能力和消化能力均有所增强。切除IBAT或逐渐降温不影响植物血球凝集素反应峰值,以及白细胞、淋巴细胞、中间粒细胞和中性粒细胞的数量。低温或切除IBAT不影响雌性黑线仓鼠的免疫功能。展开更多
To realize effective co-phasing adjustment in large-aperture sparse-aperture telescopes,a multichannel stripe tracking approach is employed,allowing simultaneous interferometric measurements of multiple optical paths ...To realize effective co-phasing adjustment in large-aperture sparse-aperture telescopes,a multichannel stripe tracking approach is employed,allowing simultaneous interferometric measurements of multiple optical paths and circumventing the need for pairwise measurements along the mirror boundaries in traditional interferometric methods.This approach enhances detection efficiency and reduces system complexity.Here,the principles of the multibeam interference process and construction of a co-phasing detection module based on direct optical fiber connections were analyzed using wavefront optics theory.Error analysis was conducted on the system surface obtained through multipath interference.Potential applications of the interferometric method were explored.Finally,the principle was verified by experiment,an interferometric fringe contrast better than 0.4 is achieved through flat field calibration and incoherent digital synthesis.The dynamic range of the measurement exceeds 10 times of the center wavelength of the working band(1550 nm).Moreover,a resolution better than one-tenth of the working center wavelength(1550 nm)was achieved.Simultaneous three-beam interference can be achieved,leading to a 50%improvement in detection efficiency.This method can effectively enhance the efficiency of sparse aperture telescope co-phasing,meeting the requirements for observations of 8-10 m telescopes.This study provides a technological foundation for observing distant and faint celestial objects.展开更多
文摘The horizontal block stripe,as an image quality defect,was analyzed by means of output signals and bias voltage stress(BVS)test.The results showed that the defect was correlated with discharging efficiency.Further,two approaches were proposed,one was to improve TFT characteristic,the other was to add reset function.The combined experiments indicated that discharging promotion can improve the defect.Especially the latter is most optimal to eliminate the phenomenon.
文摘为了解产热对动物免疫能力的影响,通过肩胛间褐色脂肪组织(interscapular brown adipose tissue,IBAT)切除术和低温处理,将雌性黑线仓鼠(Cricetulus barabensis)随机分为常温假切组(warm BAT sham‑removed group,WS,n=5)、低温假切组(cold BAT sham‑removed group,CS,n=7)和低温切除组(cold BAT removed group,CR,n=8),比较了产热和免疫器官大小及血液指标和免疫功能的差异。结果发现,切除IBAT或逐渐降温均不影响雌性黑线仓鼠的体质量和身体成分,但低温导致总脂肪质量下降。切除IBAT不影响肝脏、脾脏和胸腺等器官的鲜质量,提示器官水平产热和免疫之间无权衡关系,但逐渐降温增加了小肠鲜质量及长度、结肠鲜质量、总消化道长,暗示为满足低温下的高能量需求,其加工食物的能力和消化能力均有所增强。切除IBAT或逐渐降温不影响植物血球凝集素反应峰值,以及白细胞、淋巴细胞、中间粒细胞和中性粒细胞的数量。低温或切除IBAT不影响雌性黑线仓鼠的免疫功能。
文摘To realize effective co-phasing adjustment in large-aperture sparse-aperture telescopes,a multichannel stripe tracking approach is employed,allowing simultaneous interferometric measurements of multiple optical paths and circumventing the need for pairwise measurements along the mirror boundaries in traditional interferometric methods.This approach enhances detection efficiency and reduces system complexity.Here,the principles of the multibeam interference process and construction of a co-phasing detection module based on direct optical fiber connections were analyzed using wavefront optics theory.Error analysis was conducted on the system surface obtained through multipath interference.Potential applications of the interferometric method were explored.Finally,the principle was verified by experiment,an interferometric fringe contrast better than 0.4 is achieved through flat field calibration and incoherent digital synthesis.The dynamic range of the measurement exceeds 10 times of the center wavelength of the working band(1550 nm).Moreover,a resolution better than one-tenth of the working center wavelength(1550 nm)was achieved.Simultaneous three-beam interference can be achieved,leading to a 50%improvement in detection efficiency.This method can effectively enhance the efficiency of sparse aperture telescope co-phasing,meeting the requirements for observations of 8-10 m telescopes.This study provides a technological foundation for observing distant and faint celestial objects.
