To the Editor:Nonalcoholic fatty liver disease(NAFLD)is a clinicopathological syndrome characterized by excessive intracellular lipid accumulation in hepatocytes,not attributed to alcohol,viral infections,or other wel...To the Editor:Nonalcoholic fatty liver disease(NAFLD)is a clinicopathological syndrome characterized by excessive intracellular lipid accumulation in hepatocytes,not attributed to alcohol,viral infections,or other well-defined causes of hepatic injury.The spectrum of NAFLD encompasses nonalcoholic hepatic steatosis,nonalcoholic steatohepatitis(NASH),and associated conditions like hepatic fibrosis,cirrhosis,and hepatocellular carcinoma.NAFLD is associated with various factors,including obesity,type 2 diabetes mellitus,dyslipidemia,and hypertension.Several studies have also highlighted pancreaticoduodenectomy(PD)as a potential cause of NAFLD[1-3].The type of fatty liver disease induced by PD is etiologically linked to impaired exocrine pancreatic function[3].展开更多
Hoi An Ancient Town in Vietnam is not only a UNESCO(United Nations Educational,Scientific,and Cultural Organization)World Heritage Site but also a convergence point of traditional and modern cultures.Throughout its hi...Hoi An Ancient Town in Vietnam is not only a UNESCO(United Nations Educational,Scientific,and Cultural Organization)World Heritage Site but also a convergence point of traditional and modern cultures.Throughout its historical transitions,the cultural heritage of Hoi An Ancient Town has been well preserved and developed,and the worship of Mazu,an essential component of Hoi An’s culture,is no exception.As far as is known,Hoi An in central Vietnam houses the most Mazu temples,including the Chung Wah Hall,the Guangzhou Assembly Hall,the Fujian Assembly Hall,the Teochew Assembly Hall,and the Hainan Assembly Hall,among others,with the Fujian Assembly Hall being the most vibrant center of Mazu worship.This study employs field surveys and literature research to explore the Mazu worship practices at the Fujian Assembly Hall in Hoi An,Quang Nam Province,Vietnam.展开更多
The cult of Mazu is a common folk belief in China and Vietnam.Originating from the Song and Yuan Dynasties,particularly during the Ming and Qing Dynasties,the cult of Mazu spread to Vietnam through maritime trade and ...The cult of Mazu is a common folk belief in China and Vietnam.Originating from the Song and Yuan Dynasties,particularly during the Ming and Qing Dynasties,the cult of Mazu spread to Vietnam through maritime trade and migration from coastal regions of China.After centuries of integration and development,it evolved into its own cultural system of Mazu worship,becoming an important component of Vietnamese folk culture.Hainan,China,as a crucial supply station on the Maritime Silk Road,has close connections with the transmission of Mazu culture to Vietnam.This paper adopts field investigations and literature research methods to explore the Mazu worship and culture in Hainan,China,and the Qiongfu Assembly Halls in Vietnam.展开更多
Objective: To evaluate the insulin sensitivity action of ferulic acid(FA) in skeletal muscle and hypothalamus of high-fat diet(HFD)-induced obese mice. Methods: Obese mouse model was induced by HFD(45 kcal% lard fat) ...Objective: To evaluate the insulin sensitivity action of ferulic acid(FA) in skeletal muscle and hypothalamus of high-fat diet(HFD)-induced obese mice. Methods: Obese mouse model was induced by HFD(45 kcal% lard fat) for 16 weeks. After 8 weeks of HFD feeding, these obese mice were orally treated with FA at doses of 25 and 50 mg/kg/day for 8 weeks. At the end of all treatments, the epididymal fat, pancreas, skeletal muscle and hypothalamus were removed for biochemical parameter and protein expression examinations. Results: FA treatment significantly decreased leptin level in fat tissue and insulin level in pancreas(P < 0.05). Interestingly, obese mice treated with FA increased the protein expressions of insulin receptor substrate-1, phosphatidylinositol 3-kinase, and phosphorylated-protein kinase B in both muscle and brain(P < 0.05). The phosphorylations of adenosine monophosphate-activated protein kinase and acetyl-CoA carboxylase in muscle, and leptin receptor protein in hypothalamus were also increased(P < 0.05). The pancreatic islets histology showed smaller size in obese mice treated with FA compared to untreated obese mice. Conclusions: These findings indicate the beneficial effect of FA in improving insulin resistance in HFD-induced obese mice. These effects are probably mediated via modulating the insulin receptor substrate/phosphatidylinositol 3-kinase/protein kinase B or adenosine monophosphate-activated protein kinase pathways.展开更多
Recent paleobotanical investigations in Vietnam provide a good opportunity to improve our understanding of the biodiversity and paleoclimatic conditions in the geological past of Southeast Asia.Palms(Arecaceae)are a d...Recent paleobotanical investigations in Vietnam provide a good opportunity to improve our understanding of the biodiversity and paleoclimatic conditions in the geological past of Southeast Asia.Palms(Arecaceae)are a diverse family of typical thermophilous plants with a relatively low tolerance for freezing.In this study,we describe well-preserved fossil palm leaves from the Oligocene Dong Ho Formation of Hoanh Bo Basin,northern Vietnam.Characters of the fossil leaves,such as a fan-shaped costapalmate lamina,an unarmed petiole,a costa slightly enlarged at the base that then tapers distally into the blade,and well-preserved amphistomatic leaves with cuticles,suggest that they represent a new fossil species,which we herein designate Sabalites colaniae A.Song,T.Su,T.V.Do et Z.K.Zhou sp.nov.Together with other paleontological and palaeoclimatic evidence,we conclude that a warm climate prevailed in northern Vietnam and nearby areas during the Oligocene.展开更多
The goal of this study is to evaluate the drift of litterfall from forest to adjacent areas, validate a method to estimate the drift with water balance, direction and speed of winds and quantify the nutrients of litte...The goal of this study is to evaluate the drift of litterfall from forest to adjacent areas, validate a method to estimate the drift with water balance, direction and speed of winds and quantify the nutrients of litterfall in nearby area of the forest patch as function of distance. This phenomenon can be considered an ecosystem service to improve soil quality of the agriculture crops around the forests by nutrient input coming from the litterfall. The experiment was installed in adjacent areas of the tropical forest at central region of the State of Minas Gerais, Brazil. The branches, reproductive material and leaves which fell were measured for three years into the forest and adjacents areas. The sampled nets were located on edge and equal distances from the edge. It＇s analyzed and estimated the contribution of the litterfall components to adjacent areas by air. The quantity of litterfall by distance had large variation between adjacent areas. And it was confirmed that model estimated the leaf drift by distance with good precision.展开更多
Clock synchronization has important applications in multi-agent collaboration(such as drone light shows,intelligent transportation systems,and game AI),group decision-making,and emergency rescue operations.Synchroniza...Clock synchronization has important applications in multi-agent collaboration(such as drone light shows,intelligent transportation systems,and game AI),group decision-making,and emergency rescue operations.Synchronization method based on pulse-coupled oscillators(PCOs)provides an effective solution for clock synchronization in wireless networks.However,the existing clock synchronization algorithms in multi-agent ad hoc networks are difficult to meet the requirements of high precision and high stability of synchronization clock in group cooperation.Hence,this paper constructs a network model,named DAUNet(unsupervised neural network based on dual attention),to enhance clock synchronization accuracy in multi-agent wireless ad hoc networks.Specifically,we design an unsupervised distributed neural network framework as the backbone,building upon classical PCO-based synchronization methods.This framework resolves issues such as prolonged time synchronization message exchange between nodes,difficulties in centralized node coordination,and challenges in distributed training.Furthermore,we introduce a dual-attention mechanism as the core module of DAUNet.By integrating a Multi-Head Attention module and a Gated Attention module,the model significantly improves information extraction capabilities while reducing computational complexity,effectively mitigating synchronization inaccuracies and instability in multi-agent ad hoc networks.To evaluate the effectiveness of the proposed model,comparative experiments and ablation studies were conducted against classical methods and existing deep learning models.The research results show that,compared with the deep learning networks based on DASA and LSTM,DAUNet can reduce the mean normalized phase difference(NPD)by 1 to 2 orders of magnitude.Compared with the attention models based on additive attention and self-attention mechanisms,the performance of DAUNet has improved by more than ten times.This study demonstrates DAUNet’s potential in advancing multi-agent ad hoc networking technologies.展开更多
文摘To the Editor:Nonalcoholic fatty liver disease(NAFLD)is a clinicopathological syndrome characterized by excessive intracellular lipid accumulation in hepatocytes,not attributed to alcohol,viral infections,or other well-defined causes of hepatic injury.The spectrum of NAFLD encompasses nonalcoholic hepatic steatosis,nonalcoholic steatohepatitis(NASH),and associated conditions like hepatic fibrosis,cirrhosis,and hepatocellular carcinoma.NAFLD is associated with various factors,including obesity,type 2 diabetes mellitus,dyslipidemia,and hypertension.Several studies have also highlighted pancreaticoduodenectomy(PD)as a potential cause of NAFLD[1-3].The type of fatty liver disease induced by PD is etiologically linked to impaired exocrine pancreatic function[3].
基金sponsored by the 2021 Research Project of Hainan Research Center for Applied Foreign Languages(HNWYJD21-05)by the Scientific Research Project of Hainan Higher Education Institutions(Hnky2023-20).
文摘Hoi An Ancient Town in Vietnam is not only a UNESCO(United Nations Educational,Scientific,and Cultural Organization)World Heritage Site but also a convergence point of traditional and modern cultures.Throughout its historical transitions,the cultural heritage of Hoi An Ancient Town has been well preserved and developed,and the worship of Mazu,an essential component of Hoi An’s culture,is no exception.As far as is known,Hoi An in central Vietnam houses the most Mazu temples,including the Chung Wah Hall,the Guangzhou Assembly Hall,the Fujian Assembly Hall,the Teochew Assembly Hall,and the Hainan Assembly Hall,among others,with the Fujian Assembly Hall being the most vibrant center of Mazu worship.This study employs field surveys and literature research to explore the Mazu worship practices at the Fujian Assembly Hall in Hoi An,Quang Nam Province,Vietnam.
基金sponsored by the 2021 Research Project of Hainan Research Center for Applied Foreign Languages(HNWYJD21-05)by the Scientific Research Project of Hainan Higher Education Institutions(Hnky2023-20).
文摘The cult of Mazu is a common folk belief in China and Vietnam.Originating from the Song and Yuan Dynasties,particularly during the Ming and Qing Dynasties,the cult of Mazu spread to Vietnam through maritime trade and migration from coastal regions of China.After centuries of integration and development,it evolved into its own cultural system of Mazu worship,becoming an important component of Vietnamese folk culture.Hainan,China,as a crucial supply station on the Maritime Silk Road,has close connections with the transmission of Mazu culture to Vietnam.This paper adopts field investigations and literature research methods to explore the Mazu worship and culture in Hainan,China,and the Qiongfu Assembly Halls in Vietnam.
基金supported by the Faculty of Medicine Research Fund(GEN2-01/2016),Thammasat University,Thailand
文摘Objective: To evaluate the insulin sensitivity action of ferulic acid(FA) in skeletal muscle and hypothalamus of high-fat diet(HFD)-induced obese mice. Methods: Obese mouse model was induced by HFD(45 kcal% lard fat) for 16 weeks. After 8 weeks of HFD feeding, these obese mice were orally treated with FA at doses of 25 and 50 mg/kg/day for 8 weeks. At the end of all treatments, the epididymal fat, pancreas, skeletal muscle and hypothalamus were removed for biochemical parameter and protein expression examinations. Results: FA treatment significantly decreased leptin level in fat tissue and insulin level in pancreas(P < 0.05). Interestingly, obese mice treated with FA increased the protein expressions of insulin receptor substrate-1, phosphatidylinositol 3-kinase, and phosphorylated-protein kinase B in both muscle and brain(P < 0.05). The phosphorylations of adenosine monophosphate-activated protein kinase and acetyl-CoA carboxylase in muscle, and leptin receptor protein in hypothalamus were also increased(P < 0.05). The pancreatic islets histology showed smaller size in obese mice treated with FA compared to untreated obese mice. Conclusions: These findings indicate the beneficial effect of FA in improving insulin resistance in HFD-induced obese mice. These effects are probably mediated via modulating the insulin receptor substrate/phosphatidylinositol 3-kinase/protein kinase B or adenosine monophosphate-activated protein kinase pathways.
基金supported by National Natural Science Foundation of China(NSFC)(31800183,41922010,42002020,41661134049)Yunnan Basic Research Projects(202001AU070137,2019FB026)+2 种基金Chinese Academy of Sciences"Light of West China"Program(2020000023)the CAS 135 program(2017XTBG-T03)Project“Study,collection of fossil woods in Vietnam for exhibition in System of Vietnam National Museum of Nature”(CT0000.01/19-21).
文摘Recent paleobotanical investigations in Vietnam provide a good opportunity to improve our understanding of the biodiversity and paleoclimatic conditions in the geological past of Southeast Asia.Palms(Arecaceae)are a diverse family of typical thermophilous plants with a relatively low tolerance for freezing.In this study,we describe well-preserved fossil palm leaves from the Oligocene Dong Ho Formation of Hoanh Bo Basin,northern Vietnam.Characters of the fossil leaves,such as a fan-shaped costapalmate lamina,an unarmed petiole,a costa slightly enlarged at the base that then tapers distally into the blade,and well-preserved amphistomatic leaves with cuticles,suggest that they represent a new fossil species,which we herein designate Sabalites colaniae A.Song,T.Su,T.V.Do et Z.K.Zhou sp.nov.Together with other paleontological and palaeoclimatic evidence,we conclude that a warm climate prevailed in northern Vietnam and nearby areas during the Oligocene.
文摘The goal of this study is to evaluate the drift of litterfall from forest to adjacent areas, validate a method to estimate the drift with water balance, direction and speed of winds and quantify the nutrients of litterfall in nearby area of the forest patch as function of distance. This phenomenon can be considered an ecosystem service to improve soil quality of the agriculture crops around the forests by nutrient input coming from the litterfall. The experiment was installed in adjacent areas of the tropical forest at central region of the State of Minas Gerais, Brazil. The branches, reproductive material and leaves which fell were measured for three years into the forest and adjacents areas. The sampled nets were located on edge and equal distances from the edge. It＇s analyzed and estimated the contribution of the litterfall components to adjacent areas by air. The quantity of litterfall by distance had large variation between adjacent areas. And it was confirmed that model estimated the leaf drift by distance with good precision.
文摘Clock synchronization has important applications in multi-agent collaboration(such as drone light shows,intelligent transportation systems,and game AI),group decision-making,and emergency rescue operations.Synchronization method based on pulse-coupled oscillators(PCOs)provides an effective solution for clock synchronization in wireless networks.However,the existing clock synchronization algorithms in multi-agent ad hoc networks are difficult to meet the requirements of high precision and high stability of synchronization clock in group cooperation.Hence,this paper constructs a network model,named DAUNet(unsupervised neural network based on dual attention),to enhance clock synchronization accuracy in multi-agent wireless ad hoc networks.Specifically,we design an unsupervised distributed neural network framework as the backbone,building upon classical PCO-based synchronization methods.This framework resolves issues such as prolonged time synchronization message exchange between nodes,difficulties in centralized node coordination,and challenges in distributed training.Furthermore,we introduce a dual-attention mechanism as the core module of DAUNet.By integrating a Multi-Head Attention module and a Gated Attention module,the model significantly improves information extraction capabilities while reducing computational complexity,effectively mitigating synchronization inaccuracies and instability in multi-agent ad hoc networks.To evaluate the effectiveness of the proposed model,comparative experiments and ablation studies were conducted against classical methods and existing deep learning models.The research results show that,compared with the deep learning networks based on DASA and LSTM,DAUNet can reduce the mean normalized phase difference(NPD)by 1 to 2 orders of magnitude.Compared with the attention models based on additive attention and self-attention mechanisms,the performance of DAUNet has improved by more than ten times.This study demonstrates DAUNet’s potential in advancing multi-agent ad hoc networking technologies.
