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Management of massive fistula bleeding after endoscopic ultrasound-guided pancreatic pseudocyst drainage using hemostatic forceps: A case report

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World Journal of Clinical Cases 2019年第23期7卷 4157-4162页

作者： nan Ge Si-Yu sun Endoscopy Center Shengjing Hospital of China Medical University

BACKGROUND Endoscopic ultrasound(EUS)-guided drainage is the optimal method for treatment of pancreatic fluid collections(PFCs),and is associated with ease,safety,and *** is one of the main procedure-related complications,and often requires surgery or radiologic ***,endoscopic management of this complication is *** SUMMARY A 42-year-old man presented for evaluation of abdominal pain and distention for approximately 2 *** computed tomography revealed a pancreatic pseudocyst located in the tail of the ***-guided pancreatic pseudocyst was *** stent placement,massive bleeding was noted from the ***,hemostasis was successfully achieved using hemostatic forceps within the *** Bleeding vessel grasp and coagulation may represent a successful treatment for a fistula hemorrhage during EUS-guided drainage for a PFC,which may be tried before application of balloon or stent compression.

关键词： Pancreatic fluid collections Endoscopic ultrasound Drainage Hemorrhage Case report

Effects of Magnesium Compound with Fertilizer on Daylily (Hemerocallis citrina Baroni) Growth and Soil Nutrients

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Agricultural Sciences in China 2006年第2期5卷 123-129页

作者： sun nan ZENG Xi-bai LI Ju-mei GAO Ju-sheng WANG Bo-ren Soil ＆ Fertilizer Institute Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China Institute of Agricultural Environment and Sustainable Development Chinese Academy of Agricultural Sciences/Key Laboratory of AgroEnvironment ＆ Climate Change Ministry of Agriculture Beijing 100081 P.R.China

Effects of two kinds of magnesium compound with fertilizer on Daylily （Hemerocallis citrina Baroni） growth, yield, and soil nutrients in red soil were studied. The results indicated that significant effects of magnesium applied to soils were observed in increasing Daylily （Hemerocallis citrina Baroni） yield, improving its growth, and strengthening its antivirus property as well as increasing the amount of exchangeable Mg, N, P, and K in red soil. In particular, the effects of magnesium compound fertilizer Ⅱ （MCF2） with higher Mg content were better than that of the others, which increased Daylily （Hemerocallis citrina Baroni） yield by 57.4, 32.8, and 14.5% compared to that of control treatment （CK）, chemical fertilizer with nitrogen, phosphorus, potassium treatment （CF）, and magnesium compound fertilizer Ⅰ treatment （MCF1） with lower Mg content. It increased soil Alkali N, available P, exchangeable K, and exchangeable Mg by 94.9, 46.5, 31.1, and 35.3%, respectively, compared with that of CK treatment. Therefore, the application of magnesium compound with fertilizer is an optimum method for improving red soil quality.

关键词： magnesium compound fertilizer Daylily (Hemerocallis citrina Baroni) growth soil nutrient

Effects of Cropping System Change for Paddy Field with Double Harvest Rice on the Crops Growth and Soil Nutrient

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Agricultural Sciences in China 2007年第9期6卷 1115-1123页

作者： ZENG Xi-bai sun nan GAO Ju-sheng WANG Bo-ren LI Lian-fang Institute of Agricultural Environment and Sustainable Development Chinese Academy of Agricultural Sciences/Key Laboratory of Agro Environment and Climate Change Ministry of Agriculture Beijing 100081 P.R.China Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China

The effects of the cropping system change for paddy field with double harvest rice on crops growth and soil nutrient in red soil were studied. The results indicated that the economic benefit and the ratio of the output to input were all increased in terms of the market price for the crops under various treatments. The greatest economic benefit was obtained in the treatment of paddy-upland rotation, and the corresponding economic benefit was increased by 34.7, 21.4, and 2.2% in comparison with that of control （rice-rice-astragali）, pasture, and upland cropping treatments. The economic benefits in pasture and upland cultivation treatments were increased by I 1.0 and 31.8%, respectively, when compared with that of the control treatment （CK）. The ratio of output to input in pasture, paddy-upland rotation, and upland cropping treatments was enhanced by 0.9, 0.6, and 0.3, respectively, in comparison with that of control. To grow pasture is beneficial for improving soil fertility since the contents of soil organic matter, total nitrogen, total phosphorus, and available phosphorus are all enhanced significantly. However, the concentrations of the soil available nitrogen, the total potassium, the available potassium were somewhat reduced in all the treatments, suggesting that increasing the input of nitrogen, particularly potassium, was necessary under the present fertilization level. Based on the conditions of fertility, climate, cultivation, and management of paddy field with double harvest rice in red soil regions, it is feasible to alter the cultivation system of paddy field with bad irrigation condition. In particular, cultivation systems such as pasture and paddy-upland rotation can be selected to extend because better economic benefit and improvement of soil fertility in the purpose region were obtained.

关键词： cropping system crop growth economic benefit soil nutrient

Binding and conformation of dendrimer-based drug delivery systems:a molecular dynamics study

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Advances in Manufacturing 2015年第3期3卷 221-231页

作者： Fa-Da Zhang Yi Liu Jing-Cheng Xu sheng-Juan Li Xiu-nan Wang Yue sun Xin-Luo Zhao Department of Physics and Materials Genome Institute Shanghai University School of Materials Science and Engineering University of Shanghai for Science and Technology School of Energy & Power Engineering University of Shanghai for Science and Technology

All atomistic molecular dynamics simulations were performed on poly （amidoamine）（PAMAM） dendrimers that compound non-covalently with anticancer drug molecules including DOX, MTX, CE6, and SN38. The binding energies as well as their associated interaction energies and deformation energies were combined to evaluate the relative binding strength among drug, PAMAM, and PEG chains. We find that the deformation of dendrimers due to drug loading plays a crucial role in the drug binding. It is energetically favorable for the drug molecules to bind with PAMAM while the drugs bind with PEG metastable chains via kinetic confinement. Surface PEGylation helps dendrimers to accommodate more drug molecules with greater strength without inducing too much expansion. This work indicates that tuning the functionalized terminal groups of dendrimers is critical to design efficient dendrimer-based drug delivery systems.

关键词： Dendrimer PAMAM - PEGylation-Anticancer drug Drug delivery systems Moleculardynamics

Edge Caching in Blockchain Empowered 6G

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China Communications 2021年第1期18卷 1-17页

作者： Wen sun sheng Li Yan Zhang School of Cybersecurity Northwestern Polytechnical UniversityXi’an 710072China School of Cyber Engineering Xidian UniversityXi’an 710071China University of Oslo Oslo 0316Norway

The sixth generation(6G)of wireless cellular networks is expected to incorporate the latest developments in network infrastructure and emerging advances in *** the age of 6G,edge caching technology will evolve towards intelligence,dynamics,and ***,the security problems of edge caching,including data tampering and eavesdropping,are seldomly considered in most *** this paper,we consider the two-hop edge caching where the blockchain and physical layer security technologies are adopted to prevent data from being tampered with and *** design blockchain-based framework to guarantee the reliability of important data such as the frequency of contents and jointly optimize content caching probability and redundancy rate to maximize the secure transmission *** simulation shows that our optimization scheme can significantly improve the secure transmission probability of edge cache network,whether facing the threat of independent eavesdropping or joint eavesdropping.

关键词： blockchain 6G edge caching physical layer security

Human cytomegalovirus infection dysregulates neural progenitor cell fate by disrupting Hes1 rhythm and down-regulating its expression

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Virologica Sinica 2017年第3期32卷 188-198页

作者： Xi-Juan Liu Xuan Jiang sheng-nan Huang Jin-Yan sun Fei Zhao Wen-Bo Zeng Min-Hua Luo State Key Laboratory of Virology CAS Center for Excellence in Brain Science and Intelligence Technology (CEBSIT) Wuhan Institute of Virology Chinese Academy of Sciences University of Chinese Academy of Sciences The Joint Center of Translational Precision Medicine Guangzhou Institute of Pediatrics Guangzhou Women and Children Medical Center

Human cytomegalovirus(HCMV) infection is a leading cause of birth defects, primarily affecting the central nervous system and causing its maldevelopment. As the essential downstream effector of Notch signaling pathway, Hes1, and its dynamic expression, plays an essential role on maintaining neural progenitor/stem cells(NPCs) cell fate and fetal brain development. In the present study, we reported the first observation of Hes1 oscillatory expression in human NPCs, with an approximately1.5 hour periodicity and a Hes1 protein half-life of about 17(17.6 ± 0.2) minutes. HCMV infection disrupts the Hes1 rhythm and down-regulates its expression. Furthermore, we discovered that depleting Hes1 protein disturbed NPCs cell fate by suppressing NPCs proliferation and neurosphere formation, and driving NPCs abnormal differentiation. These results suggested a novel mechanism linking disruption of Hes1 rhythm and down-regulation of Hes1 expression to neurodevelopmental disorders caused by congenital HCMV infection.

关键词： human cytomegalovirus(HCMV) neural progenitor cells(NPCs) Hes1 rhythm cell fate

Deep eutectic solvents for separation and purification applications in critical metal metallurgy:Recent advances and perspectives

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 1-19页

作者： Shuo Chen shengpeng Su Yanfang Huang Bingbing Liu Hu sun Shuzhen Yang Guihong Han School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Zhongyuan Critical Metals Laboratory Henan ProvinceZhengzhou 450001China

Solvent extraction,a separation and purification technology,is crucial in critical metal *** solvents commonly used in solvent extraction exhibit disadvantages,such as high volatility,high toxicity,and flammability,causing a spectrum of hazards to human health and environmental *** solvents have been recognized as potential alternatives to these harmful organic *** the past two decades,several neoteric solvents have been proposed,including ionic liquids(ILs)and deep eutectic solvents(DESs).DESs have gradually become the focus of green solvents owing to several advantages,namely,low toxicity,degradability,and low *** this critical review,their classification,formation mechanisms,preparation methods,characterization technologies,and special physicochemical properties based on the most recent advancements in research have been systematically ***,the major separation and purification applications of DESs in critical metal metallurgy were comprehensively ***,future opportunities and challenges of DESs were explored in the current research *** conclusion,this review provides valuable insights for improving our overall understanding of DESs,and it holds important potential for expanding separation and purification applications in critical metal metallurgy.

关键词： deep eutectic solvents preparations properties separation and purification critical metal metallurgy

A Thermodynamic Perspective on Polymer Glass Formation

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Chinese Journal of Polymer Science 2023年第9期41卷 1329-1341,I0004页

作者： Wen-sheng Xu Zhao-Yan sun State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China

The dynamics of polymeric and other glass-forming liquids dramatically slows down upon cooling toward the glass transition temperature without any obvious significant change in their static structure.A quantitative understanding of this extraordinary dynamic slowdown remains one of the most significant challenges in condensed matter ***,extensive efforts have been devoted to explaining the dynamics of glass-forming liquids in terms of thermodynamic properties,leading to a number of semi-empirical models emphasizing distinct thermodynamic ***,a thermodynamic perspective is provided on the glass formation of polymeric and other *** begin with an overview of the thermodynamic models of glass formation,including the intuitively appealing“free volume”models,enthalpy models originally emphasized by Goldstein and later by others,and the highly influential configurational entropy-based *** review of these models is followed by a discussion of the advances that attempt to bring together some of the seemingly disparate thermodynamic viewpoints on glass formation by revealing a close interrelation between thermodynamic *** conclude this review with remarks on several key topics in this field,along with our viewpoint for future work.

关键词： Glass formation Entropy Free volume Enthalpy

Preparation of nanometer yellow iron and its UV absorption capacity

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Journal of University of Science and Technology Beijing 2007年第1期14卷 72-76页

作者： Chunbao sun Beihai Zhou nan Li Ruiming Wang Civil and Environment Engineering School University of Science and Technology Beijing Beijing 100083 China Semiconductor Manufacture International Corporation （Tianjin） Tianjin 300380 China

The nanometer yellow iron oxide was prepared by oxidizing Fe（OH）2 with air, which was verified with XRD and TEM. The result shows that nanometer yellow iron oxide is spindle-shaped and well-distributed with a long axis of 150-200 nm and short axis of 40-50 nm. Ultraviolet （UV） transmittance of the iron oxide shows the great effect of concentration on both transparency and UV ab- sorption, and it has been proven that iron oxide with a concentration of 0.025wt% is preferred. The spectrum of XRD indicates that it is goethite. When the yellow iron is dispersed in sol, given that the wavelength of UV is less than 300 nm, its UV absorption capacity is superior to those of ZnO and TiO2. The absorption capacity of the yellow iron is less than TiO2 and more than ZnO as the wavelength of UV is 300-400 nm.

关键词： yellow iron oxide nanometer particle UV absorption transparency