Steady growth of forex reserves makes it possible for China to bring currency-related risks under control more easily A ccording to the State Administration of Foreign Exchange,by the end of January,China’s foreign e...Steady growth of forex reserves makes it possible for China to bring currency-related risks under control more easily A ccording to the State Administration of Foreign Exchange,by the end of January,China’s foreign exchange(forex)reserves had hit US$3.18 trillion,up by US$56.8 billion,or 1.82 percent,over the end of 2022,the fourth monthly hike in a row.展开更多
Objective To study the curative effect of grafting great auricul ar nerve with pedic ulated fascial tube in defective dam age of facial nerve.Met hod All the patients in the study were tre ated by grafting great auric...Objective To study the curative effect of grafting great auricul ar nerve with pedic ulated fascial tube in defective dam age of facial nerve.Met hod All the patients in the study were tre ated by grafting great auricular nerv e which was covered by pediculated f ascial tube near facial nerve trunk.Resul t The 3otogenic fascial paralysis pat ients had grade III recovery of facia l n erve function(30%～38%)2.0to 2.5years after the nerve grafting ope ra tion;2post-traumatic facial paral ysis patients had grade II recovery o f facial nerve function(69%～71%)2.5to 3.5years after the nerve graf ting operation.Conclusion The grafting of pediculated fascial tube surrounded great auricular nerve can provide a biological environment wi th excellent blood supply for the ple rosis and regeneration of nerves and can accelerate the func tional recovery of nerves after the nerve grafting.展开更多
神经退行性疾病是一类异质性脑部疾病,其特征通常表现为暂时性或永久性的功能改变。目前,医学治疗手段仅限于缓解症状,而对于挽救或再生细胞功能甚至阻止神经元死亡过程等方面的效率不高。随着干细胞技术的发展,细胞替代疗法被视为治疗...神经退行性疾病是一类异质性脑部疾病,其特征通常表现为暂时性或永久性的功能改变。目前,医学治疗手段仅限于缓解症状,而对于挽救或再生细胞功能甚至阻止神经元死亡过程等方面的效率不高。随着干细胞技术的发展,细胞替代疗法被视为治疗神经退行性疾病的最有前景的方法之一。根尖牙乳头干细胞(stem cells from the apical papilla,SCAPs)具有成骨、成牙和成神经向的潜能,能够分化为神经细胞,并具有神经保护作用,因此被视为神经组织修复的理想候选细胞。近年来,神经组织工程逐渐成为研究热点,利用SCAPs的多向分化潜能,并诱导其向神经分化方向发展,为神经损伤的治疗提供了新的策略。展开更多
As the world's largest bartending competition,Diageo Reserve World Class allows mix masters to show off their skills and garner recognition.This year,more than 200 brilliant booze stars from 120 bars around the co...As the world's largest bartending competition,Diageo Reserve World Class allows mix masters to show off their skills and garner recognition.This year,more than 200 brilliant booze stars from 120 bars around the country have been invited to the fifth annual World Class competition for the China region-to be held May 13 in Shanghai(location TBA).展开更多
花粉产量是定量重建古植被、古气候的必要条件,目前花粉产量包括相对花粉产量和绝对花粉产量。由于较难获得多年连续的花粉沉积数据,学者多倾向于使用相对花粉产量进行古植被定量重建。相对花粉产量是某一花粉类型相对于同一参考种的花...花粉产量是定量重建古植被、古气候的必要条件,目前花粉产量包括相对花粉产量和绝对花粉产量。由于较难获得多年连续的花粉沉积数据,学者多倾向于使用相对花粉产量进行古植被定量重建。相对花粉产量是某一花粉类型相对于同一参考种的花粉产量的比值(参考种通常选取植物群落和花粉组合中出现频率较高的同一花粉类型),可通过ERV(Extended R-value)模型进行估算,但其准确性受植被调查方法和模型假设条件影响较大。本文介绍了估算相对花粉产量所需的植被调查方法和利用花粉产量定量重建植被景观的模型。目前较成熟的模型为景观重建模型(Landscape Reconstruction Algorithm),包括REVEALS模型(Regional Estimates of Vegetation Abundance from Large Sites,适用于面积≥1~5km^2的沉积盆地植被重建)和LOVE模型(Local Vegetation Estimates,适用于面积为0.1~1.0km^2的沉积盆地植被重建)。欧洲及我国不同区域相对花粉产量和REVEALS模型定量重建研究结果均表明,重建后的古植被景观能较好反映当地的古植被组成。展开更多
文摘Steady growth of forex reserves makes it possible for China to bring currency-related risks under control more easily A ccording to the State Administration of Foreign Exchange,by the end of January,China’s foreign exchange(forex)reserves had hit US$3.18 trillion,up by US$56.8 billion,or 1.82 percent,over the end of 2022,the fourth monthly hike in a row.
文摘Objective To study the curative effect of grafting great auricul ar nerve with pedic ulated fascial tube in defective dam age of facial nerve.Met hod All the patients in the study were tre ated by grafting great auricular nerv e which was covered by pediculated f ascial tube near facial nerve trunk.Resul t The 3otogenic fascial paralysis pat ients had grade III recovery of facia l n erve function(30%～38%)2.0to 2.5years after the nerve grafting ope ra tion;2post-traumatic facial paral ysis patients had grade II recovery o f facial nerve function(69%～71%)2.5to 3.5years after the nerve graf ting operation.Conclusion The grafting of pediculated fascial tube surrounded great auricular nerve can provide a biological environment wi th excellent blood supply for the ple rosis and regeneration of nerves and can accelerate the func tional recovery of nerves after the nerve grafting.
文摘神经退行性疾病是一类异质性脑部疾病,其特征通常表现为暂时性或永久性的功能改变。目前,医学治疗手段仅限于缓解症状,而对于挽救或再生细胞功能甚至阻止神经元死亡过程等方面的效率不高。随着干细胞技术的发展,细胞替代疗法被视为治疗神经退行性疾病的最有前景的方法之一。根尖牙乳头干细胞(stem cells from the apical papilla,SCAPs)具有成骨、成牙和成神经向的潜能,能够分化为神经细胞,并具有神经保护作用,因此被视为神经组织修复的理想候选细胞。近年来,神经组织工程逐渐成为研究热点,利用SCAPs的多向分化潜能,并诱导其向神经分化方向发展,为神经损伤的治疗提供了新的策略。
文摘As the world's largest bartending competition,Diageo Reserve World Class allows mix masters to show off their skills and garner recognition.This year,more than 200 brilliant booze stars from 120 bars around the country have been invited to the fifth annual World Class competition for the China region-to be held May 13 in Shanghai(location TBA).
文摘花粉产量是定量重建古植被、古气候的必要条件,目前花粉产量包括相对花粉产量和绝对花粉产量。由于较难获得多年连续的花粉沉积数据,学者多倾向于使用相对花粉产量进行古植被定量重建。相对花粉产量是某一花粉类型相对于同一参考种的花粉产量的比值(参考种通常选取植物群落和花粉组合中出现频率较高的同一花粉类型),可通过ERV(Extended R-value)模型进行估算,但其准确性受植被调查方法和模型假设条件影响较大。本文介绍了估算相对花粉产量所需的植被调查方法和利用花粉产量定量重建植被景观的模型。目前较成熟的模型为景观重建模型(Landscape Reconstruction Algorithm),包括REVEALS模型(Regional Estimates of Vegetation Abundance from Large Sites,适用于面积≥1~5km^2的沉积盆地植被重建)和LOVE模型(Local Vegetation Estimates,适用于面积为0.1~1.0km^2的沉积盆地植被重建)。欧洲及我国不同区域相对花粉产量和REVEALS模型定量重建研究结果均表明,重建后的古植被景观能较好反映当地的古植被组成。
