The Furong pluton,located in central Hunan,China,hosts numerous tungsten veins within and around the granite,which are of great economic significance.However,its petrogenesis and related mineralization are poorly cons...The Furong pluton,located in central Hunan,China,hosts numerous tungsten veins within and around the granite,which are of great economic significance.However,its petrogenesis and related mineralization are poorly constrained.In this study,we used U−Pb dating,petrological and geochemical methods to ascertain the emplacement time,classification of granitic rock,nature of the source rocks,formation mechanism,and its geodynamic implications for the Furong pluton.It is shown that the granite is precisely determined to be formed at~210 Ma,and belongs to the moderately-fractionated S-type granite.Combined with regional tectonic setting,it is concluded that the pluton was formed due to crust extension and thinning followed by plate collision and compression in South China.It is also revealed that tungsten mineralization and Indosinian granites exhibit a close temporal,spatial and genetic relationships,and further exploration of tungsten deposits within and around the granite in central Hunan,even in South China,is urgently needed.展开更多
Transduodenal ampullectomy(TDA)remains a valuable surgical option for patients with ampullary tumors,particularly those who are unsuitable for endoscopic ampullectomy or pancreaticoduodenectomy(PD)[1].Ampullary tumors...Transduodenal ampullectomy(TDA)remains a valuable surgical option for patients with ampullary tumors,particularly those who are unsuitable for endoscopic ampullectomy or pancreaticoduodenectomy(PD)[1].Ampullary tumors account for approximately 0.5%of all gastrointestinal tumor[2,3];therefore,TDA is not widely performed in clinical practice,and most hepatobiliary surgeons have limited experience with this technique.展开更多
In recent years,deep learning has been introduced into the field of Single-pixel imaging(SPI),garnering significant attention.However,conventional networks still exhibit limitations in preserving image details.To addr...In recent years,deep learning has been introduced into the field of Single-pixel imaging(SPI),garnering significant attention.However,conventional networks still exhibit limitations in preserving image details.To address this issue,we integrate Large Kernel Convolution(LKconv)into the U-Net framework,proposing an enhanced network structure named U-LKconv network,which significantly enhances the capability to recover image details even under low sampling conditions.展开更多
基金financially supported by the Natural Key Research and Development Program of China(No.2023YFC2906801)the National Natural Science Foundation of China(No.42102073)the Open Protect Fund of State Key Laboratory of Critical Mineral Research and Exploration,China(No.202308)。
文摘The Furong pluton,located in central Hunan,China,hosts numerous tungsten veins within and around the granite,which are of great economic significance.However,its petrogenesis and related mineralization are poorly constrained.In this study,we used U−Pb dating,petrological and geochemical methods to ascertain the emplacement time,classification of granitic rock,nature of the source rocks,formation mechanism,and its geodynamic implications for the Furong pluton.It is shown that the granite is precisely determined to be formed at~210 Ma,and belongs to the moderately-fractionated S-type granite.Combined with regional tectonic setting,it is concluded that the pluton was formed due to crust extension and thinning followed by plate collision and compression in South China.It is also revealed that tungsten mineralization and Indosinian granites exhibit a close temporal,spatial and genetic relationships,and further exploration of tungsten deposits within and around the granite in central Hunan,even in South China,is urgently needed.
文摘Transduodenal ampullectomy(TDA)remains a valuable surgical option for patients with ampullary tumors,particularly those who are unsuitable for endoscopic ampullectomy or pancreaticoduodenectomy(PD)[1].Ampullary tumors account for approximately 0.5%of all gastrointestinal tumor[2,3];therefore,TDA is not widely performed in clinical practice,and most hepatobiliary surgeons have limited experience with this technique.
文摘In recent years,deep learning has been introduced into the field of Single-pixel imaging(SPI),garnering significant attention.However,conventional networks still exhibit limitations in preserving image details.To address this issue,we integrate Large Kernel Convolution(LKconv)into the U-Net framework,proposing an enhanced network structure named U-LKconv network,which significantly enhances the capability to recover image details even under low sampling conditions.
