频谱弥散(smeared spectrum,SMSP)干扰和切片组合(chopping and interleaving,C&I)干扰是两种用于对抗线性调频(linear frequency modulation,LFM)脉冲压缩雷达的干扰样式。相比SMSP干扰,C&I干扰与雷达发射信号相似度更高,干扰...频谱弥散(smeared spectrum,SMSP)干扰和切片组合(chopping and interleaving,C&I)干扰是两种用于对抗线性调频(linear frequency modulation,LFM)脉冲压缩雷达的干扰样式。相比SMSP干扰,C&I干扰与雷达发射信号相似度更高,干扰抑制更为困难。针对该问题,以远距离支援干扰下LFM相参雷达对抗C&I干扰为背景,提出快慢时间域联合处理C&I干扰抑制算法。分析了C&I干扰时频特征和对相参雷达的干扰特性,在此基础上,通过快慢时间域处理估计干扰位置、幅度、多普勒频率、采样周期、采样脉宽等参数,重构干扰信号,通过对消实现干扰抑制。仿真试验验证了所提算法的可行性和有效性。展开更多
Response surface methodology, according to CCD （central composite design）, was used to determine the optimum processing conditions giving maximum water loss and minimum solid gain during osmotic dehydration of medla...Response surface methodology, according to CCD （central composite design）, was used to determine the optimum processing conditions giving maximum water loss and minimum solid gain during osmotic dehydration of medlars in sucrose solution. The independent variables of osmotic dehydration were temperature （25-65 ℃）, processing time （20-240 min）, sugar concentration （45%-65% w/w） and blanching time （0-180 s）. The optimum conditions were found to be： temperature = 55 ℃, time = 180 min, concentration = 60° Brix and blanching time = 30 s. At this optimum point, water loss, weight reduction and solid gain were found to be 74.12% and 7.136%, respectively.展开更多
Objective： The aim of the study was to report a case with a giant phyllodes tumor of the left breast and discuss the diagnostic and management challenges. Methods： A 47-year-old female patient was admitted to our ce...Objective： The aim of the study was to report a case with a giant phyllodes tumor of the left breast and discuss the diagnostic and management challenges. Methods： A 47-year-old female patient was admitted to our center （Department of General Surgery, the First Affiliated Hospital, Luzhou Medical College, China） due to a large left breast mass for about 2.5 years. Core tissue biopsy showed mixed epithelial-stromal proliferation suggestive of a phyllodes tumor. Left modified radical mastectomy with dissection of level Ⅰ and level Ⅱ lymph nodes was performed. Results： The pathologic findings of this proce- dure were consistent with borderline phyllodes tumor. The tumor measured 47.5 cm× 37,0 cm× 28.0 cm and weighed 9.79 kg ex vivo. Conclusion： To our knowledge, this patient presented one of the biggest phyllodes tumors of breast in all cases reported in English-language publications so far.展开更多
文摘频谱弥散(smeared spectrum,SMSP)干扰和切片组合(chopping and interleaving,C&I)干扰是两种用于对抗线性调频(linear frequency modulation,LFM)脉冲压缩雷达的干扰样式。相比SMSP干扰,C&I干扰与雷达发射信号相似度更高,干扰抑制更为困难。针对该问题,以远距离支援干扰下LFM相参雷达对抗C&I干扰为背景,提出快慢时间域联合处理C&I干扰抑制算法。分析了C&I干扰时频特征和对相参雷达的干扰特性,在此基础上,通过快慢时间域处理估计干扰位置、幅度、多普勒频率、采样周期、采样脉宽等参数,重构干扰信号,通过对消实现干扰抑制。仿真试验验证了所提算法的可行性和有效性。
文摘Response surface methodology, according to CCD （central composite design）, was used to determine the optimum processing conditions giving maximum water loss and minimum solid gain during osmotic dehydration of medlars in sucrose solution. The independent variables of osmotic dehydration were temperature （25-65 ℃）, processing time （20-240 min）, sugar concentration （45%-65% w/w） and blanching time （0-180 s）. The optimum conditions were found to be： temperature = 55 ℃, time = 180 min, concentration = 60° Brix and blanching time = 30 s. At this optimum point, water loss, weight reduction and solid gain were found to be 74.12% and 7.136%, respectively.
文摘Objective： The aim of the study was to report a case with a giant phyllodes tumor of the left breast and discuss the diagnostic and management challenges. Methods： A 47-year-old female patient was admitted to our center （Department of General Surgery, the First Affiliated Hospital, Luzhou Medical College, China） due to a large left breast mass for about 2.5 years. Core tissue biopsy showed mixed epithelial-stromal proliferation suggestive of a phyllodes tumor. Left modified radical mastectomy with dissection of level Ⅰ and level Ⅱ lymph nodes was performed. Results： The pathologic findings of this proce- dure were consistent with borderline phyllodes tumor. The tumor measured 47.5 cm× 37,0 cm× 28.0 cm and weighed 9.79 kg ex vivo. Conclusion： To our knowledge, this patient presented one of the biggest phyllodes tumors of breast in all cases reported in English-language publications so far.
