A four-stage cascaded variable optical attenuator(VOA)with a large attenuation range is presented.The VOA is based on a Mach–Zehnder interferometer(MZI)and fabricated in a silica-based planar lightwave circuit(PLC)pl...A four-stage cascaded variable optical attenuator(VOA)with a large attenuation range is presented.The VOA is based on a Mach–Zehnder interferometer(MZI)and fabricated in a silica-based planar lightwave circuit(PLC)platform.The thermo-optic effect is used to achieve intensity modulation.The measured maximum attenuation of the four-stage cascaded VOA is 88.38 d B.The chip is also tested in a quantum key distribution(QKD)system to generate signal and decoy states.The mean photon number after attenuation of the four-stage cascaded VOA is less than 0.1,which can meet the requirement of QKD.展开更多
This study summarizes Prof. Li-xing ZHUANG's experience in treating psycho-cardiological disease, which is characterized by cardiovascular somatic symptoms and emotional abnormalities. Psycho-cardiological disease...This study summarizes Prof. Li-xing ZHUANG's experience in treating psycho-cardiological disease, which is characterized by cardiovascular somatic symptoms and emotional abnormalities. Psycho-cardiological disease is mainly caused by disorders of the brain and heart shen-mind, and related to the dysfunction of zangfu functions. In acupuncture treatment, attention should be paid to “regulation of the heart and brain, and taking zangfu organs in to account at the same time.” Sìshénzhēn (四神针) of JIN’s three-needle, Shéntíng (神庭GV 24) and Yìntáng (印堂GV29) are adopted to regulate the brain, Shénmén (神门HT7) or Nèiguān (内关PC6) are used to regulate the heart shen-mind, Hégǔ (合谷LI4), Tàichōng (太冲LR3), and Sānyīnjiāo (三阴交SP6) are used to regulate zangfu, and the Daoqi Tongjing method is applied to regulate the qi and blood, achieving good effects in the clinical setting.展开更多
研究香蕉抗性淀粉含量和单宁含量与香蕉成熟度的关系,再通过单因素试验和正交试验方法,优化单宁酶酶解去除单宁的工艺参数,以提取出纯度更高的香蕉抗性淀粉。研究结果表明:随着成熟度的增加,香蕉果肉的硬度越小,抗性淀粉含量越少,单宁...研究香蕉抗性淀粉含量和单宁含量与香蕉成熟度的关系,再通过单因素试验和正交试验方法,优化单宁酶酶解去除单宁的工艺参数,以提取出纯度更高的香蕉抗性淀粉。研究结果表明:随着成熟度的增加,香蕉果肉的硬度越小,抗性淀粉含量越少,单宁含量也越少。单宁酶酶解4个因素对单宁脱除效果的影响大小依次为:单宁酶用量>酶解温度>酶解时间>酶作用p H。最佳酶解条件为单宁酶用量0.12%,p H 6.5,50℃,酶解时间为100 min,该条件下单宁脱除率达56.70%。展开更多
基金the National Key Research and Development Program of China(Grant No.2019YFB2203504)Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB43000000)the Natural Science Foundation of Anhui Province,China(Grant No.1908085QF274)。
文摘A four-stage cascaded variable optical attenuator(VOA)with a large attenuation range is presented.The VOA is based on a Mach–Zehnder interferometer(MZI)and fabricated in a silica-based planar lightwave circuit(PLC)platform.The thermo-optic effect is used to achieve intensity modulation.The measured maximum attenuation of the four-stage cascaded VOA is 88.38 d B.The chip is also tested in a quantum key distribution(QKD)system to generate signal and decoy states.The mean photon number after attenuation of the four-stage cascaded VOA is less than 0.1,which can meet the requirement of QKD.
基金Supported by the Science and Technology Department of Guangdong Province:2018-5。
文摘This study summarizes Prof. Li-xing ZHUANG's experience in treating psycho-cardiological disease, which is characterized by cardiovascular somatic symptoms and emotional abnormalities. Psycho-cardiological disease is mainly caused by disorders of the brain and heart shen-mind, and related to the dysfunction of zangfu functions. In acupuncture treatment, attention should be paid to “regulation of the heart and brain, and taking zangfu organs in to account at the same time.” Sìshénzhēn (四神针) of JIN’s three-needle, Shéntíng (神庭GV 24) and Yìntáng (印堂GV29) are adopted to regulate the brain, Shénmén (神门HT7) or Nèiguān (内关PC6) are used to regulate the heart shen-mind, Hégǔ (合谷LI4), Tàichōng (太冲LR3), and Sānyīnjiāo (三阴交SP6) are used to regulate zangfu, and the Daoqi Tongjing method is applied to regulate the qi and blood, achieving good effects in the clinical setting.
文摘以番茄和苹果为原材料,制备复合果蔬汁,添加保加利亚乳杆菌Lactobacillus bulgaricus与嗜热链球菌Streptococcus thermophilus(比例为1∶1)进行发酵,开发研制番茄苹果复合汁乳酸菌发酵饮料.通过正交实验确定番茄苹果复合汁乳酸菌发酵饮料的最佳发酵工艺条件为:番茄汁与苹果汁的混合比例为2∶1,脱脂乳添加量为14%,乳酸菌接种量为7%,发酵温度为43℃,发酵时间为18 h.
文摘研究香蕉抗性淀粉含量和单宁含量与香蕉成熟度的关系,再通过单因素试验和正交试验方法,优化单宁酶酶解去除单宁的工艺参数,以提取出纯度更高的香蕉抗性淀粉。研究结果表明:随着成熟度的增加,香蕉果肉的硬度越小,抗性淀粉含量越少,单宁含量也越少。单宁酶酶解4个因素对单宁脱除效果的影响大小依次为:单宁酶用量>酶解温度>酶解时间>酶作用p H。最佳酶解条件为单宁酶用量0.12%,p H 6.5,50℃,酶解时间为100 min,该条件下单宁脱除率达56.70%。
