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Modification of Nanocomposites by Melting Intercalation of Polypropylene in Montmorillonite

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Journal of Wuhan University of Technology(Materials Science) 2002年第1期17卷 66-68页

作者：王钧 Wuhan University of Technology

The polypropylene wax modified by ultraviolet irradiation. The polypropylene-montmorillonite nanocomposiles were prepared by direct melting intercalation oj polypropylene powders. The structure of polypropylene , the polyproprlene irradiated, montmorillinote and polypropylene-montmorillonite composites were studied by XRD, 1R and DSC. The results show that the PP molecules can are oxidized during ultraviolet irradiation , melt polypropylene can intercalate into montmorillonite layer. As a result, the layered distance ( d0.01) of montmorillonite increases, and the melt absorption peak of polypropylene in layer is eliminated.

关键词： polypropylene montmorillonite melt intercalation nanocomposites

Influence of intraband motion on the interband excitation and high harmonic generation

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Chinese Physics B 2019年第9期28卷 9-15页

作者： Rui-xin Zuo xiao-Hong Song xi-wang liu Shi-Dong Yang Wei-Feng Yang Research Center for Advanced Optics and Photoelectronics Department of PhysicsCollege of ScienceShantou UniversityShantou 515063China Department of Mathematics College of ScienceShantou UniversityShantou 515063China Key Laboratory of Intelligent Manufacturing Technology(Shantou University) Ministry of EducationShantou 515063China

Tunnelling, acceleration, and collision of electrons are the basic events in the process of high harmonic generation(HHG) in strong-field interaction with ***, the periodic array of atoms in semiconductor structure makes three steps become interatomic coherent process which leads to complicated carrier dynamics and two sources of high harmonic emission: interband polarization and intraband *** difference of features of high harmonic generation between semiconductors and atoms is strongly linked to the unique presence of intraband motion which manifests itself a nontrivial role in intertwined two ***, we review recent experimental and theoretical advances of understanding coupled interband and intraband mechanisms of HHG in *** we focus on the influence of intraband motion on the interband excitation, and on the subsequent HHG emission and attosecond pulse generation.

关键词： high harmonic generation interband polarization intraband current attosecond pulse generation

High shear stress-induced pulmonary hypertension alleviated by endothelial progenitor cells independent of autophagy

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World Journal of Pediatrics 2015年第2期11卷 171-176页

作者： Bi-Jun Xu Jian Chen xi Chen xi-wang liu Shu Fang Qiang Shu Lei Hu Shan-Shan Shi Li-Zhong Du Lin-Hua Tan Department of Cardiothoracic Surgery Children's HospitalZhejiang University School of Medicine3333 Binsheng RoadHangzhou 310051China Department of Cardiothoracic Surgery Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310016China The First Affiliated Hospital of Zhejiang Chinese Medical University Hangzhou 310006China Central Laboratory Children's HospitalZhejiang University School of MedicineHangzhou 310051China Department of SICU Children's HospitalZhejiang University School of MedicineHangzhou 310051China

Background:Pulmonary hypertension(PH)is a progressive disease characterized by lung endothelial cell dysfunction and Vascular *** progenitor cells(EPCs)have been proved to be a potential therapeutic strategy to treat *** has been found to be protective to hypoxia-induced *** this study,we applied high shear stress(HSS)-induced PH,and examined whether EPCs confer resistance against HSS-induced PH through ***:Pulmonary microvascular endothelial cells(PMVECs)were cultured under HSS with pro-inflammatory factors in an artificial capillary system to mimic the PH *** of p62,a selective autophagy substrate,were quantified by western *** viability was determined by trypan blue exclusion ***:The p62 level in PMVECs was increased at 4 hours after HSS,peaked at 12 hours and declined at 24 *** cell viability gradually *** with PMVECs cultured by empty medium,in cells cultured by EPC-conditioned medium(EPC-CM),the cell viability was significantly higher;however,p62 levels were also significantly higher,suggesting inhibition of autophagy by *** choloquine to suppress autophagy decreased the cell viability of PMVECs under ***:EPC-CM could suppress the autophagic activity of PMVECs in HSS-induced ***,suppression of autophagy leads to ceil *** could fight against PH through cellular or molecular pathways independent of *** it is not proved if induction of autophagy could be a potential strategy to treat HSS-induced PH as hypoxia-induced PH.

关键词： autophagy endothelial progenitor cells pulmonary hypertension

Fabrication and Microstructure of SiO_2-GeO_2 Sol-gel Glass Coatings

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Journal of Wuhan University of Technology(Materials Science) 2003年第2期18卷 46-48页

作者：敬承斌 Wuhan University of Technology

SiO 2-GeO 2 sols and gel glass coatings with different contents of germanium dioxide were *** and transparent sols could only be obtained when the content of GeO 2 was under 35%.It is shown by SEM that only one continuous phase is observed in the coating of 65SiO 2·35GeO 2 and plenty of Ge,O and Si were all found in ***,the separated phase is found in the coating of 60SiO 2·40GeO 2 and a large number of Ge and *** is proved by the Raman scattering investigation that the separated phase in the coating of 60SiO 2·40GeO 2 is germanium *** congeries of hydrolystates of Cl 3GeCH 2CH 2COOH play the main role in the formation of the separated phase when the proportion of GeO 2 is much ***-O-Ge,Si-O-Si,and Ge-O-Ge bonds form in the coating of 65SiO 2·35GeO 2 and this coating is homogenous.

关键词： SiO 2-GeO 2 sol-gel coating microstructure

Review on typical applications and computational optimizations based on semiclassical methods in strong-field physics

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Chinese Physics B 2022年第3期31卷 1-15页

作者： Xun-Qin Huo Wei-Feng Yang Wen-Hui Dong Fa-Cheng Jin xi-wang liu Hong-Dan Zhang xiao-Hong Song Institute of Mathematics College of ScienceShantou UniversityShantou 515063China School of Science Hainan UniversityHaikou 570288China Research Center for Advanced Optics and Photoelectronics Department of PhysicsCollege of ScienceShantou UniversityShantou 515063China Faculty of Science Xi'an Aeronautical UniversityXi'an 710077China

The semiclassical method based on Feynman’s path-integral is in favor of uncovering the quantum tunneling effect,the classical trajectory description of the electron, and the quantum phase information, which can present an intuitive and transparent physical image of electron’s propagation in comparison with the ab initio time-dependent Schr ¨odinger *** this review, we introduce the basic theoretical concepts and development of several semiclassical methods as well as some of their applications in strong-field physics. Special emphasis is placed on extracting time delay on attosecond scale by the combination of the semiclassical method with phase of phase method. Hundreds of millions of trajectories are generally adopted to obtain a relatively high-resolution photoelectron spectrum, which would take a large amount of time. Here we also introduce several optimization approaches of the semiclassical method to overcome the time-consuming problem of violence calculation.

关键词： semiclassical method attosecond time delay Phase of Phase deep learning

Plasma gelsolin level predicts acute kidney injury after cardiopulmonary bypass in infants and young children

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World Journal of Pediatrics 2018年第2期14卷 143-150页

作者： Shan-Shan Shi xiao-Jie Yue Dong-Yan Zhao Jia-Jie Fan Jian-Guo Xu xi-wang liu Bao-Li Cheng xiang-Ming Fang Jie Fan Qiang Shu Cardiac Intensive Care Unit The Children's Hospital of Zhejiang University School of MedicineHangzhouChina The Key Laboratory for Diagnosis and Therapy of Neonatal Diseases The Children's Hospital of Zhejiang University School of MedicineHangzhouChina Department of Thoracic and Cardiovascular Surgery The Children's Hospital of Zhejiang University School of MedicineHangzhouChina Department of Anesthesiology The First Affiliated Hospital of Zhejiang University School of MedicineHangzhouChina Department of Surgery University of Pittsburgh School of MedicinePittsburghPAUSA

Background Acute kidney injury(AKI)after cardiopulmonary bypass(CPB)is a common complication especially in pedi-atric *** gelsolin(pGSN)is an anti-inflammatory factor through binding with actin and pro-inflammatory cytokines in *** in pGSN has been reported in some pathologic *** purpose of the study was to determine the alterations of pGSN level in infants and young children after CPB and the role of pGSN as a predictor for the morbidity and severity of post-CPB *** Sixty-seven infants and young children at age≤3 years old undergoing CPB were prospectively *** levels were measured during peri-operative period with enzyme-linked immuno-sorbent assay and normalized with plasma total protein *** clinical characteristics of the patients were also *** In patients developing AKI,the normalized pGSN(pGSN_(N))levels significantly decreased at 6 h post-operation and remained low for 24 h post-operation as compared to the patients with *** at 6 h post-operation combining with CPB time presents an excellent predictive value for *** Decreased pGSN_(N)identifies post-CPB AKI in the patients≤3 years old,and is associated with adverse clini-cal *** findings suggest that circulating GSN in post-CPB patients may have beneficial effects on diminishing inflammatory responses.

关键词： Acute kidney injury Cardiopulmonary bypass Infants Plasma gelsolin Young children

FUBP3 mediates the amyloid-β-induced neuronal NLRP3 expression

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Neural Regeneration Research 2025年第7期20卷 2068-2083页

作者： Jing Yao Yuan Li xi liu Wenping Liang Yu Li Liyong Wu Zhe wang Weihong Song The National Clinical Research Center for Geriatric Disease Xuanwu HospitalCapital Medical UniversityBeijingChina Department of Neurology The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan ProvinceChina Department of Neurosurgery Xuanwu HospitalCapital Medical UniversityBeijingChina Department of Pediatrics The Second Affiliated Hospital and Yuying Children’s HospitalKey Laboratory of Alzheimer’s Disease of Zhejiang ProvinceInstitute of AgingWenzhou Medical UniversityWenzhouZhejiang ProvinceChina Oujiang Laboratory(Zhejiang Laboratory for Regenerative Medicine Visionand Brain Health)WenzhouZhejiang ProvinceChina

Alzheimer's disease is characterized by deposition of amyloid-β,which forms extracellular neuritic plaques,and accumulation of hyperphosphorylated tau,which aggregates to form intraneuronal neurofibrillary tangles,in the *** NLRP3 inflammasome may play a role in the transition from amyloid-βdeposition to tau phosphorylation and *** NLRP3 is primarily found in brain microglia,and tau is predominantly located in neurons,it has been suggested that NLRP3 expressed by microglia indirectly triggers tau phosphorylation by upregulating the expression of pro-inflammatory ***,we found that neurons also express NLRP3 in vitro and in vivo,and that neuronal NLRP3 regulates tau *** biochemical methods,we mapped the minimal NLRP3 promoter and identified FUBP3 as a transcription factor regulating NLRP3 expression in *** primary neurons and the neuroblastoma cell line Neuro2A,FUBP3 is required for endogenous NLRP3 expression and tau phosphorylation only when amyloid-βis *** the brains of aged wild-type mice and a mouse model of Alzheimer's disease,FUBP3 expression was markedly increased in cortical *** analysis suggested that FUBP3 plays a role in neuron-mediated immune *** also found that FUBP3 trimmed the 5′end of DNA fragments that it bound,implying that FUBP3 functions in stress-induced *** findings suggest that neuronal NLRP3 may be more directly involved in the amyloid-β-to–phospho-tau transition than microglial NLRP3,and that amyloid-βfundamentally alters the regulatory mechanism of NLRP3 expression in *** that FUBP3 was only expressed at low levels in young wild-type mice and was strongly upregulated in the brains of aged mice and Alzheimer's disease mice,FUBP3 could be a safe therapeutic target for preventing Alzheimer's disease progression.

关键词： 5′end trimming Alzheimer's disease amyloid-beta amyloid-β-dependent transcription FUBP3 inflammasome inflammation neuron NLRP3 tau transcription factor

A promising approach for quantifying focal stroke modeling and assessing stroke progression:optical resolution photoacoustic microscopy photothrombosis

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Neural Regeneration Research 2025年第7期20卷 2029-2037页

作者： xiao Liang xingping Quan xiaorui Geng Yujing Huang Yonghua Zhao Lei xi Zhen Yuan Ping wang Bin liu Faculty of Health Sciences University of MacaoMacao Special Administrative RegionChina Center for Cognitive and Brain Sciences University of MacaoMacao Special Administrative RegionChina Department of Biomedical Engineering Southern University of Science and TechnologyShenzhenGuangdong ProvinceChina State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoTaipaMacao Special Administrative RegionChina Department of Emergency Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

To investigate the mechanisms underlying the onset and progression of ischemic stroke,some methods have been proposed that can simultaneously monitor and create embolisms in the animal cerebral ***,these methods often require complex systems and the effect of age on cerebral embolism has not been adequately studied,although ischemic stroke is strongly *** this study,we propose an optical-resolution photoacoustic microscopy-based visualized photothrombosis methodology to create and monitor ischemic stroke in mice simultaneously using a 532 nm pulsed *** observed the molding process in mice of different ages and presented age-dependent vascular embolism ***,we integrated optical coherence tomography angiography to investigate age-associated trends in cerebrovascular variability following a *** imaging data and quantitative analyses underscore the differential cerebrovascular responses to stroke in mice of different ages,thereby highlighting the technique's potential for evaluating cerebrovascular health and unraveling age-related mechanisms involved in ischemic strokes.

关键词： age-dependent cerebral cortex ischemic stroke mouse model optical coherence tomography angiography photoacoustic microscopy photothrombosis vascular imaging

Interplay between creeping fat and gut microbiota: A brand-new perspective on fecal microbiota transplantation in Crohn's disease

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World Journal of Gastroenterology 2025年第2期31卷 138-143页

作者： Ying wang Jie liu Department of Life Sciences and Medicine South District of Endoscopic CenterThe First Affiliated Hospital of University of Science and Technology of ChinaUniversity of Science and Technology of ChinaHefei 230001Anhui ProvinceChina Department of Gastroenterology The First Affiliated Hospital of University of Science and Technology of ChinaHefei 230001Anhui ProvinceChina

Inflammatory bowel disease,particularly Crohn's disease(CD),has been linked to modifications in mesenteric adipose tissue(MAT)and the phenomenon known as"creeping fat"(CrF).The presence of CrF is believed to serve as a predictor for early clinical recurrence following surgical intervention in patients with ***,the incorporation of the mesentery during ileocolic resection for CD has been correlated with a decrease in surgical recurrence,indicating the significant role of MAT in the pathogenesis of *** numerous studies have indicated that dysbiosis of the gut microbiota is a critical factor in the development of CD,the functional implications of translocated microbiota within the MAT of CD patients remain *** manuscript commentary discusses a recent basic research conducted by Wu et *** their study,intestinal bacteria from individuals were transplanted into CD model mice,revealing that fecal microbiota trans-plantation(FMT)from healthy donors alleviated CD symptoms,whereas FMT from CD patients exacerbated these ***,FMT was found to affect intestinal permeability,barrier function,and the levels of proinflammatory factors and ***,these findings suggest that targeting MAT and CrF may hold therapeutic potential for patients with ***,the study did not evaluate the composition of the intestinal microbiota of the donors or the subsequent alterations in the gut ***,the gut microbiota plays a crucial role in the histopathology of CD,and thus,targeting MAT and CrF may represent a promising avenue for treatment in this patient population.

关键词： Crohn's disease Mesenteric adipose tissue Creeping fat Fecal microbiota transplantation Gut microbiota